北师大版（2024）七年级下册Unit 3 Rain or shine.词汇拓展短语背记

中小学教育资源及组卷应用平台
北师大版 七下 Unit 3 Rain or shine.词汇拓展短语背记
序号 短语或句型 意思 例句
1 shine brightly 明亮地照耀 The sun shines brightly in the sky on sunny days.（晴天时，太阳在天空中明亮地照耀。）
2 shine a light 照亮；开灯 Please shine a light on the path; it’s too dark here.（请用灯照亮小路，这里太黑了。）
3 shine like a star 像星星一样闪耀 The girl’s eyes shine like stars when she talks about her dream.（女孩谈起梦想时，眼睛像星星一样闪耀。）
4 snowy day 下雪天 We can make snowmen and have fun on a snowy day.（下雪天我们可以堆雪人，玩得很开心。）
5 snowy mountain 雪山 The snowy mountain looks very beautiful in winter.（这座雪山在冬天看起来格外美丽。）
6 snowy weather 下雪的天气 We need to wear warm clothes in snowy weather.（下雪天我们需要穿暖和的衣服。）
7 rainy season 雨季 The rainy season usually comes in summer in this city.（这座城市的雨季通常在夏天来临。）
8 rainy day 下雨天 I like to read books at home on a rainy day.（下雨天我喜欢在家看书。）
9 rainy morning 下雨的早晨 We walked to school slowly on the rainy morning.（下雨的早晨，我们慢慢步行去上学。）
10 high temperature 高温 High temperature makes people feel uncomfortable in summer.（夏天的高温让人感到不舒服。）
11 low temperature 低温 The low temperature will make the lake freeze at night.（夜间的低温会让湖面结冰。）
12 temperature drop 气温下降 There will be a big temperature drop tomorrow; please wear more clothes.（明天气温会大幅下降，请多穿点衣服。）
13 20 degrees Celsius 20摄氏度 The temperature today is 20 degrees Celsius, which is very comfortable.（今天的气温是20摄氏度，非常舒适。）
14 minus 5 degrees 零下5度 The temperature in Harbin is minus 5 degrees in winter.（哈尔滨冬天的气温是零下5度。）
15 degree of heat 热度 The degree of heat in the room is just right for sleeping.（房间里的温度刚好适合睡觉。）
16 minus zero 零下零度 The weather report says it will be minus zero tonight.（天气预报说今晚气温会降到零下零度。）
17 minus 10 degrees Celsius 零下10摄氏度 We need to wear thick coats when it is minus 10 degrees Celsius.（气温零下10摄氏度时，我们需要穿厚外套。）
18 minus number 负数 Minus numbers are often used in math class.（负数在数学课上经常被用到。）
19 international meeting 国际会议 Many famous people attended the international meeting in Beijing.（许多名人参加了在北京召开的国际会议。）
20 international friend 国际友人 We made friends with some international friends at the summer camp.（我们在夏令营结识了一些国际友人。）
21 international school 国际学校 My cousin studies in an international school and can speak English fluently.（我表姐在国际学校读书，英语说得很流利。）
22 low price 低价 We can buy fresh vegetables at a low price in the market.（我们可以在市场上低价买到新鲜蔬菜。）
23 low voice 低声 Please speak in a low voice in the library; people are reading.（在图书馆请低声说话，大家都在看书。）
24 low level 低水平 His English is at a low level and he needs to practice more.（他的英语水平很低，需要多加练习。）
25 high speed 高速 The train runs at high speed and can reach the city in two hours.（这列火车高速行驶，两小时就能到达那个城市。）
26 high score 高分 She got a high score in the English exam and was very happy.（她英语考试得了高分，非常开心。）
27 high mountain 高山 Climbing high mountains needs a lot of strength and courage.（攀登高山需要很强的体力和勇气。）
28 freezing cold 极冷的 It is freezing cold outside; don’t go out without a coat.（外面冷得刺骨，没穿外套别出去。）
29 freezing weather 严寒天气 Freezing weather is bad for the growth of plants.（严寒天气不利于植物生长。）
30 freezing point 冰点 The freezing point of water is zero degrees Celsius.（水的冰点是零摄氏度。）
31 whatever you like 无论你喜欢什么 You can choose whatever you like from the menu.（你可以从菜单上选择任何你喜欢的东西。）
32 whatever happens 无论发生什么 Whatever happens, I will stand by your side.（无论发生什么，我都会支持你。）
33 whatever you do 无论你做什么 Whatever you do, you should try your best.（无论你做什么，都应该尽全力。）
34 build a house 建房子 The workers are busy building a house near our school.（工人们正在我们学校附近忙着建房子。）
35 build a bridge 建桥 The government plans to build a bridge over the river.（政府计划在这条河上建一座桥。）
36 build up 增强；建立 Doing sports every day can help you build up your body.（每天做运动能帮你增强体质。）
37 make a snowman 堆雪人 Children like to make snowmen when it snows heavily.（下大雪时，孩子们喜欢堆雪人。）
38 a big snowman 一个大雪人 We made a big snowman with a carrot nose in the yard.（我们在院子里堆了一个胡萝卜鼻子的大雪人。）
39 snowman’s hat 雪人的帽子 We put a red hat on the snowman’s head.（我们给雪人头上戴了一顶红帽子。）
40 swimming pool 游泳池 We can swim in the swimming pool in summer.（夏天我们可以在游泳池里游泳。）
41 a small pool 一个小池塘 There is a small pool with many fish in the park.（公园里有一个小鱼塘，里面有很多鱼。）
42 pool water 池水 The pool water is clean and clear in the morning.（早上的池水清澈见底。）
43 have a picnic 野餐 We plan to have a picnic in the park this weekend.（这个周末我们计划去公园野餐。）
44 picnic food 野餐食物 My mother prepared some sandwiches and fruits as picnic food.（妈妈准备了一些三明治和水果作为野餐食物。）
45 picnic basket 野餐篮 We put all the food into the picnic basket and went to the hill.（我们把所有食物放进野餐篮，然后去了山上。）
46 indoor activity 室内活动 We can do some indoor activities when it rains.（下雨时我们可以做一些室内活动。）
47 indoor sports 室内运动 Basketball and badminton are popular indoor sports.（篮球和羽毛球是很受欢迎的室内运动。）
48 indoor swimming pool 室内游泳池 The indoor swimming pool is open all year round.（这个室内游泳池全年开放。）
49 city centre 市中心 There are many shops and restaurants in the city centre.（市中心有很多商店和餐馆。）
50 sports centre 体育中心 We often play basketball in the sports centre after school.（放学后我们经常去体育中心打篮球。）
51 shopping centre 购物中心 My mother likes to go shopping in the shopping centre on weekends.（妈妈周末喜欢去购物中心逛街。）
52 in January 在一月 New Year’s Day is in January every year.（每年的元旦都在一月份。）
53 January holiday 一月假期 We have a short holiday in January in China.（在中国，我们一月份有一个短假期。）
54 cold January 寒冷的一月 January is very cold in the northern part of China.（中国北方的一月非常寒冷。）
55 wet clothes 湿衣服 Don’t wear wet clothes, or you will catch a cold.（别穿湿衣服，否则你会感冒的。）
56 get wet 淋湿 We got wet in the sudden rain on our way home.（回家路上，我们被突如其来的大雨淋湿了。）
57 wet ground 潮湿的地面 Be careful! The wet ground is very slippery.（小心！潮湿的地面很滑。）
58 a few friends 几个朋友 I invited a few friends to my birthday party.（我邀请了几个朋友来参加我的生日派对。）
59 a few books 几本书 There are a few books on the desk; they are mine.（桌上有几本书，是我的。）
60 a few minutes 几分钟 Wait a few minutes; I will be ready soon.（等我几分钟，我马上就好。）
61 hold a meeting 举行会议 Our class will hold a meeting to discuss the sports meeting.（我们班要开个会讨论运动会的事。）
62 hold a party 举办派对 We will hold a party for our teacher’s birthday.（我们要为老师的生日举办一场派对。）
63 hold on 等一下；坚持 Hold on! I will come to help you right now.（等一下！我马上来帮你。）
64 most students 大多数学生 Most students like to play computer games after school.（大多数学生放学后喜欢玩电脑游戏。）
65 most of the time 大部分时间 We study at school most of the time on weekdays.（工作日我们大部分时间都在学校学习。）
66 the most important 最重要的 The most important thing is to keep healthy.（最重要的事是保持健康。）
67 by themselves 独自地 The children can finish the task by themselves.（孩子们可以独自完成这项任务。）
68 enjoy themselves 玩得开心 The kids enjoyed themselves at the amusement park.（孩子们在游乐园玩得很开心。）
69 help themselves 自取；随便吃 Help yourselves to some fruit, kids.（孩子们，随便吃点水果吧。）
70 weather forecast 天气预报 We can watch the weather forecast to know tomorrow’s weather.（我们可以看天气预报了解明天的天气。）
71 accurate forecast 准确的预报 The accurate forecast helps us prepare for the rain.（准确的预报帮我们为下雨做好准备。）
72 forecast the weather 预报天气 It is not easy to forecast the weather correctly.（准确预报天气并不容易。）
73 start of the term 学期开始 We need to buy new books at the start of the term.（学期开始时我们需要买新书。）
74 start of the game 比赛开始 The players were very excited at the start of the game.（比赛开始时，选手们都很兴奋。）
75 start of the holiday 假期开始 We went to the beach at the start of the summer holiday.（暑假一开始我们就去了海边。）
76 a pair of jeans 一条牛仔裤 He likes to wear a pair of jeans to school every day.（他每天喜欢穿一条牛仔裤去上学。）
77 blue jeans 蓝色牛仔裤 Blue jeans are very popular among young people.（蓝色牛仔裤很受年轻人欢迎。）
78 casual jeans 休闲牛仔裤 I bought a new pair of casual jeans yesterday.（我昨天买了一条新的休闲牛仔裤。）
79 a warm overcoat 一件暖和的大衣 My father gave me a warm overcoat as a birthday gift.（爸爸给了我一件暖和的大衣作为生日礼物。）
80 wool overcoat 羊毛大衣 The wool overcoat is very comfortable to wear in winter.（羊毛大衣冬天穿很舒服。）
81 long overcoat 长大衣 She looks very beautiful in a long overcoat.（她穿长大衣看起来很漂亮。）
82 a pair of gloves 一副手套 You need to wear a pair of gloves in cold winter.（寒冷的冬天你需要戴一副手套。）
83 wool gloves 羊毛手套 My mother knitted a pair of wool gloves for me.（妈妈给我织了一副羊毛手套。）
84 leather gloves 皮手套 Leather gloves are more durable than cloth ones.（皮手套比布手套更耐用。）
85 a wool scarf 一条羊毛围巾 I wear a wool scarf to keep my neck warm.（我戴一条羊毛围巾保暖脖子。）
86 colorful scarf 彩色围巾 The colorful scarf makes her dress look more beautiful.（这条彩色围巾让她的裙子看起来更漂亮。）
87 silk scarf 丝巾 My mother likes to wear a silk scarf in spring.（妈妈春天喜欢戴丝巾。）
88 if you like 如果你愿意 You can stay for dinner if you like.（如果你愿意，可以留下来吃晚饭。）
89 if it rains 如果下雨 We will stay at home if it rains tomorrow.（如果明天下雨，我们就待在家里。）
90 ask if 询问是否 I called to ask if she would come to the party.（我打电话问她是否会来参加派对。）
91 bright sunshine 明媚的阳光 We enjoy the bright sunshine in the park on weekends.（周末我们在公园里享受明媚的阳光。）
92 bright color 鲜艳的颜色 The flowers in the garden are of bright colors.（花园里的花颜色鲜艳。）
93 bright student 聪明的学生 She is a bright student who can learn things quickly.（她是个聪明的学生，学东西很快。）
94 gentle wind 微风 A gentle wind is blowing and makes us feel cool.（微风吹过，让我们感到凉爽。）
95 gentle person 温和的人 My teacher is a gentle person who is always kind to us.（我的老师是个温和的人，对我们总是很友善。）
96 gentle smile 温柔的微笑 She gave me a gentle smile when I met her.（我见到她时，她给了我一个温柔的微笑。）
97 strong wind 大风 The strong wind blew down many trees last night.（昨晚的大风吹倒了很多树。）
98 wind speed 风速 The wind speed is very high today; don’t fly kites.（今天风速很大，别放风筝。）
99 against the wind 逆风 We walked slowly against the wind on the way home.（回家的路上，我们顶着风慢慢走。）
100 a pair of sunglasses 一副太阳镜 You should wear a pair of sunglasses in summer to protect your eyes.（夏天你应该戴太阳镜保护眼睛。）
101 colorful sunglasses 彩色太阳镜 She bought a pair of colorful sunglasses yesterday.（她昨天买了一副彩色太阳镜。）
102 sports sunglasses 运动太阳镜 Sports sunglasses are suitable for outdoor activities.（运动太阳镜适合户外活动。）
103 a baseball hat 一顶棒球帽 He wears a baseball hat to school every day.（他每天戴棒球帽去上学。）
104 sun hat 遮阳帽 We need to wear sun hats when we go to the beach.（去海边时我们需要戴遮阳帽。）
105 warm hat 保暖帽 You should wear a warm hat in cold winter.（寒冷的冬天你应该戴保暖帽。）
106 light music 轻音乐 Listening to light music can help us relax.（听轻音乐能帮我们放松。）
107 light color 浅色 Light colors make the room look bigger.（浅色让房间看起来更大。）
108 light clothes 轻便的衣服 We should wear light clothes in summer.（夏天我们应该穿轻便的衣服。）
109 a cotton T-shirt 一件棉质T恤 I like to wear a cotton T-shirt in summer because it is comfortable.（夏天我喜欢穿棉质T恤，因为很舒服。）
110 colorful T-shirt 彩色T恤 He bought a new colorful T-shirt for the sports meeting.（他为运动会买了一件新的彩色T恤。）
111 sports T-shirt 运动T恤 Sports T-shirts are suitable for doing exercise.（运动T恤适合做运动时穿。）
112 a pair of trainers 一双运动鞋 We should wear a pair of trainers when we do sports.（做运动时我们应该穿运动鞋。）
113 running trainers 跑步鞋 Running trainers are suitable for running.（跑步鞋适合跑步时穿。）
114 comfortable trainers 舒适的运动鞋 These comfortable trainers are my favorite.（这双舒适的运动鞋是我的最爱。）
115 affect our health 影响我们的健康 Bad habits can affect our health badly.（坏习惯会严重影响我们的健康。）
116 affect the result 影响结果 The bad weather will affect the result of the match.（坏天气会影响比赛结果。）
117 affect our mood 影响我们的心情 The music can affect our mood easily.（音乐很容易影响我们的心情。）
118 human being 人类 Human beings should protect the earth.（人类应该保护地球。）
119 human life 人类生活 Science makes human life more convenient.（科学让人类生活更便捷。）
120 human nature 人性 Kindness is part of human nature.（善良是人性的一部分。）
121 not only...but also... 不仅……而且…… He can not only sing but also dance.（他不仅会唱歌，而且会跳舞。）
122 not only us but also them 不仅我们，而且他们 Not only us but also they like playing football.（不仅我们，他们也喜欢踢足球。）
123 not only hard but also smart 不仅努力，而且聪明 She is not only hard-working but also smart.（她不仅努力，而且聪明。）
124 dark night 黑夜 We can see many stars in the dark night.（黑夜里我们能看到很多星星。）
125 dark color 深色 Dark colors are popular in winter.（深色在冬天很受欢迎。）
126 dark room 黑暗的房间 Please turn on the light; it is a dark room.（请开灯，这房间太黑了。）
127 small insect 小昆虫 There are many small insects in the grass.（草地上有很多小昆虫。）
128 harmful insect 害虫 Mosquitoes are harmful insects that can spread diseases.（蚊子是会传播疾病的害虫。）
129 useful insect 益虫 Bees are useful insects that can make honey.（蜜蜂是会酿蜜的益虫。）
130 behave well 表现好 Students should behave well at school.（学生在学校应该表现好。）
131 behave politely 举止礼貌 We should behave politely when we meet strangers.（遇到陌生人时，我们应该举止礼貌。）
132 behave badly 表现差 The boy was punished because he behaved badly in class.（这个男孩因为在课堂上表现差而受到了惩罚。）
133 even if 即使 Even if it rains, we will still go to the park.（即使下雨，我们还是要去公园。）
134 even though 尽管 Even though he is tired, he still keeps working.（尽管他很累，还是继续工作。）
135 even more 甚至更 The movie is even more interesting than I thought.（这部电影比我想象的更有趣。）
136 die out 灭绝 Some animals are in danger of dying out.（一些动物面临灭绝的危险。）
137 die of illness 因病去世 His grandfather died of illness last year.（他爷爷去年因病去世了。）
138 die from accident 死于事故 The man died from a car accident last month.（这个男人上个月死于一场车祸。）
139 thick book 厚书 This thick book is about the history of China.（这本厚书是关于中国历史的。）
140 thick fog 浓雾 The thick fog made it hard for us to see the road.（浓雾让我们很难看清路。）
141 thick coat 厚外套 You need to wear a thick coat in cold winter.（寒冷的冬天你需要穿厚外套。）
142 heavy fog 大雾 We can’t see the building clearly because of the heavy fog.（因为大雾，我们看不清那栋楼。）
143 foggy day 雾天 It is not safe to drive on a foggy day.（雾天开车不安全。）
144 in the fog 在雾中 We walked slowly in the fog this morning.（今天早上我们在雾中慢慢走。）
145 busy highway 繁忙的公路 There are many cars on the busy highway.（繁忙的公路上有很多汽车。）
146 highway accident 公路事故 The highway accident caused a big traffic jam.（这场公路事故造成了严重的交通堵塞。）
147 along the highway 沿着公路 We saw many trees along the highway.（我们沿着公路看到了很多树。）
148 avoid mistakes 避免错误 You should check your homework carefully to avoid mistakes.（你应该仔细检查作业，避免错误。）
149 avoid danger 避免危险 We should follow the rules to avoid danger.（我们应该遵守规则，避免危险。）
150 avoid meeting him 避免见到他 She left early to avoid meeting him.（她早早离开，避免见到他。）
151 traffic accident 交通事故 We should obey the traffic rules to prevent traffic accidents.（我们应该遵守交通规则，预防交通事故。）
152 have an accident 发生事故 He had an accident on his way to work yesterday.（他昨天上班路上出了事故。）
153 car accident 车祸 A car accident happened near our school last week.（上周我们学校附近发生了一场车祸。）
154 heavy storm 暴风雨 A heavy storm hit the city last night.（昨晚一场暴风雨袭击了这座城市。）
155 rainstorm 暴雨 The rainstorm caused floods in some areas.（暴雨在一些地区引发了洪水。）
156 stormy weather 暴风雨天气 We should stay at home in stormy weather.（暴风雨天气我们应该待在家里。）
157 change one’s mind 改变主意 He changed his mind and decided to go with us.（他改变了主意，决定和我们一起去。）
158 change the plan 改变计划 We had to change the plan because of the bad weather.（因为天气不好，我们不得不改变计划。）
159 change into 变成 The rain changed into snow in the evening.（晚上雨变成了雪。）
160 make a plan 制定计划 We should make a plan before we start the trip.（出发旅行前，我们应该制定一个计划。）
161 travel plan 旅行计划 My parents made a travel plan for the summer holiday.（爸爸妈妈为暑假制定了旅行计划。）
162 study plan 学习计划 A good study plan can help us learn better.（一个好的学习计划能帮我们学得更好。）
163 farming tools 农具 The farmer has many farming tools in his house.（这位农民家里有很多农具。）
164 farming industry 农业 The farming industry is very important for our country.（农业对我们国家很重要。）
165 modern farming 现代农业 Modern farming can produce more food.（现代农业能生产更多的粮食。）
166 besides this 除此之外 Besides this, we also need to buy some water.（除此之外，我们还需要买一些水。）
167 besides English 除了英语之外 He can speak French besides English.（除了英语，他还会说法语。）
168 besides me 除了我之外 Besides me, all my classmates went to the park.（除了我，我所有的同学都去了公园。）
169 sports event 体育赛事 The Olympic Games is a big sports event.（奥运会是一场大型体育赛事。）
170 important event 重要事件 This important event was reported on TV.（这件重要事件上了电视新闻。）
171 school event 校园活动 We will have a school event next Friday.（下周五我们会有一场校园活动。）
172 sudden rain 突如其来的雨 We were caught in a sudden rain on the way home.（回家路上我们遇到了一场突如其来的雨。）
173 sudden change 突然的变化 There was a sudden change in the weather.（天气发生了突然的变化。）
174 sudden stop 突然停止 The car made a sudden stop to avoid hitting the dog.（汽车突然停下，避免撞到小狗。）
175 outdoor activity 户外活动 We like to do outdoor activities on sunny days.（晴天我们喜欢做户外活动。）
176 outdoor sports 户外运动 Running and climbing are popular outdoor sports.（跑步和爬山是很受欢迎的户外运动。）
177 outdoor picnic 户外野餐 We had an outdoor picnic last weekend.（上周末我们进行了一场户外野餐。）
178 be able to do 能够做某事 She is able to play the piano very well.（她钢琴弹得很好。）
179 be able to swim 会游泳 Most of the students in our class are able to swim.（我们班大多数学生都会游泳。）
180 be able to speak 会说 He is able to speak three languages.（他会说三种语言。）
181 better than 比……更好 This book is better than that one.（这本书比那本好。）
182 get better 好转 His cold got better after he took the medicine.（他吃了药后感冒好转了。）
183 had better do 最好做某事 You had better finish your homework before watching TV.（你最好先完成作业再看电视。）
184 warm sunshine 温暖的阳光 The cat likes to sleep in the warm sunshine.（猫咪喜欢在温暖的阳光下睡觉。）
185 sunshine and rain 阳光和雨水 Plants need sunshine and rain to grow.（植物需要阳光和雨水才能生长。）
186 enjoy the sunshine 享受阳光 We enjoyed the sunshine on the beach yesterday.（昨天我们在沙滩上享受阳光。）
187 small raindrop 小雨滴 Small raindrops are falling from the sky.（小雨滴正从天上落下。）
188 big raindrop 大雨滴 Big raindrops hit the window loudly.（大雨滴重重地打在窗户上。）
189 raindrop on the leaf 树叶上的雨滴 The raindrops on the leaf look like pearls.（树叶上的雨滴像珍珠一样。）
190 calm down 冷静下来 Calm down! There is nothing to worry about.（冷静下来！没什么好担心的。）
191 keep calm 保持冷静 We should keep calm in an emergency.（紧急情况下我们应该保持冷静。）
192 calm sea 平静的大海 The calm sea looks very beautiful in the morning.（清晨平静的大海看起来很美。）
193 peaceful place 宁静的地方 The village is a peaceful place to live in.（这个村庄是个宁静的宜居之地。）
194 peaceful life 平静的生活 We all want to live a peaceful life.（我们都想过平静的生活。）
195 peaceful world 和平的世界 People all over the world hope for a peaceful world.（全世界人民都向往一个和平的世界。）
196 relax oneself 放松自己 Listening to music is a good way to relax oneself.（听音乐是放松自己的好方法。）
197 relax after work 下班后放松 My father likes to watch TV to relax after work.（爸爸下班后喜欢看电视放松。）
198 relax at home 在家放松 We can relax at home on weekends.（周末我们可以在家放松。）
199 lucky dog 幸运儿 He won the first prize; what a lucky dog!（他得了一等奖，真是个幸运儿！）
200 be lucky to do 很幸运做某事 I am lucky to have a good friend like you.（我很幸运有你这样的好朋友。）
201 good luck 好运 Good luck to you in the exam!（祝你考试好运！）
202 by yourself 独自地 You can finish the task by yourself.（你可以独自完成这项任务。）
203 enjoy yourself 玩得开心 Enjoy yourself at the party!（在派对上玩得开心点！）
204 help yourself 随便吃 Help yourself to some cake.（随便吃点蛋糕吧。）
205 big stone 大石头 There is a big stone in the middle of the road.（路中间有一块大石头。）
206 stone bridge 石桥 The stone bridge has a history of 200 years.（这座石桥有两百年的历史了。）
207 stone house 石头房子 Some people live in stone houses in the countryside.（乡下有些人住在石头房子里。）
208 sand beach 沙滩 We like to play on the sand beach in summer.（夏天我们喜欢在沙滩上玩。）
209 fine sand 细沙 The fine sand feels soft under our feet.（细沙在脚下感觉很柔软。）
210 sand castle 沙堡 Children like to build sand castles on the beach.（孩子们喜欢在沙滩上堆沙堡。）
211 wall calendar 挂历 There is a beautiful wall calendar in my room.（我房间里有一本漂亮的挂历。）
212 desk calendar 台历 My father uses a desk calendar to check the date.（爸爸用台历来查看日期。）
213 school calendar 校历 The school calendar tells us when the holiday starts.（校历告诉我们假期什么时候开始。）
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