Unit 2 I think that mooncakes are delicious!知识点详解
一、重点短语
1. put on:增加(体重);发胖;穿上。例如:I've put on five pounds during the Spring Festival.(春节期间我胖了五磅。)Put on your coat. It's cold outside.(穿上你的外套,外面冷。)
2. sound like:听起来像。例如:That sounds like a good idea.(那听起来像是个好主意。)
3. be similar to:与……相似。例如:My watch is similar to yours.(我的手表和你的相似。)
4. throw...at...:把……朝……扔去。例如:Don't throw stones at the dog.(不要朝狗扔石头。)
5. wash away:冲走;洗掉。例如:The flood washed away many houses.(洪水冲走了许多房屋。)
二、语法要点
1. 宾语从句:
本单元继续学习宾语从句,that 引导的宾语从句常可省略 that,例如:I believe (that) he will come.(我相信他会来。)
当宾语从句表示客观真理、科学事实等时,无论主句是什么时态,从句都用一般现在时。例如:The teacher told us that the earth moves around the sun.(老师告诉我们地球绕着太阳转。)
2. 感叹句:
结构:What + (a/an) + 形容词 + 可数名词单数 + 主语 + 谓语!What + 形容词 + 可数名词复数/不可数名词 + 主语 + 谓语!How + 形容词/副词 + 主语 + 谓语!
例如:What a beautiful flower it is!(多么漂亮的一朵花啊!)What beautiful flowers they are!(多么漂亮的花啊!)How beautiful the flower is!(这朵花多么漂亮啊!)
三、重点词汇
1. steal:偷;窃取,其过去式为 stole。例如:Someone stole my bike.(有人偷了我的自行车。)
2. lay:放置;安放;产(卵),其过去式为 laid。例如:She laid the baby down gently.(她轻轻地把婴儿放下。)Hens lay eggs.(母鸡下蛋。)
3. admire:欣赏;仰慕。例如:I admire his courage.(我钦佩他的勇气。)
4. treat:款待;招待;对待。例如:He treated us to a big meal.(他请我们吃了一顿大餐。)Don't treat me like a child.(不要把我当小孩对待。)
5. tie:n. 领带;v.(用线、绳等)系。例如:He is wearing a blue tie.(他戴着一条蓝色领带。)Tie the dog to the tree.(把狗拴在树上。)
宾语从句的用法
一、引导词
1. that
that 引导宾语从句时无词义,在从句中不充当成分,口语中常省略。例如:
I think (that) you are right.(我认为你是对的。)
2. if/whether
if 和 whether 表示“是否”,在从句中不充当成分,可互换使用,但 whether 常与 or not 连用,而 if 一般不与 or not 连用。例如:
I don't know if/whether it will rain tomorrow.(我不知道明天是否会下雨。)
I wonder whether or not he will come.(我想知道他是否会来。)
3. 连接代词
包括 what、who、whom、whose、which 等,这些连接代词在从句中充当主语、宾语、表语或定语等成分。例如:
I don't know what he is doing.(我不知道他正在做什么。)这里 what 作宾语从句的宾语。
She asked me who would come to the meeting.(她问我谁会来参加会议。)这里 who 作宾语从句的主语。
4. 连接副词
包含 when、where、why、how 等,在从句中充当状语。例如:
Can you tell me when we will start (你能告诉我我们什么时候开始吗?)这里 when 作时间状语。
二、时态
1. 主句是一般现在时
宾语从句可以根据实际情况使用各种时态。例如:
I know that he came here yesterday.(我知道他昨天来这儿了。)
I know that he will come tomorrow.(我知道他明天会来。)
2. 主句是一般过去时
宾语从句要用相应的过去时态,包括一般过去时、过去进行时、过去将来时、过去完成时。例如:
He said that he was reading a book at that time.(他说那时他正在读一本书。)
She told me that she would go to Beijing the next day.(她告诉我她第二天要去北京。)
He said that he had finished his homework.(他说他已经完成了作业。)
3. 当宾语从句表示客观真理、科学事实、格言、谚语等时
无论主句是什么时态,从句都用一般现在时。例如:
The teacher told us that the earth moves around the sun.(老师告诉我们地球绕着太阳转。)
宾语从句的注意事项
一、语序
宾语从句要用陈述句语序,即“连接词 + 主语 + 谓语 + 其他成分”。例如:
错误:Can you tell me what does he like
正确:Can you tell me what he likes
二、否定转移
当主句的谓语动词是 think、believe、suppose、expect 等表示“认为、相信、猜想、期望”等意义的动词,且主语是第一人称时,如果宾语从句是否定形式,要将否定词转移到主句中。例如:
错误:I think he isn't a good student.
正确:I don't think he is a good student.