Unit 15 We’re trying to save the manatees! Section A 1a-Grammar Focus

课件57张PPT。新目标 九年级 Unit 15英语课件Unit 15
We’re trying to save the manatees!How many kinds of Animals can you think of?
2. Can you see them around us? Why?Warming upAnimals are man’s friends.What’s this? And how to describe it? enormous, grayWhat’s this? And how to describe it? noisy, cleverWhat’s this? And how to describe it? playfulWhat’s this? And how to describe it? gentle, shyWhat’s this? And how to describe it? playfulWhat’s this? And how to describe it? aggressive, funny1b Listening gentle furry enormous
playful noisy shy
aggressive gray fast spotted I am like this animal because I am strong and intelligent. I like water and I like to eat vegetables.You’re like an elephant. No.You’re like a
Manatee.Yes.I am like this animal because I am lovely and playful. I like to eat bamboo.You’re like a panda.Yes. 2a ListeningListen and complete the chart.2b2500 in the U.S.the water under the trees in mangrove swamps.swamps being polluted.
not enough food.10 feet long, large, 1000 pounds heavyPairwork A: How big are manatees?
B: They’re about 10 feet long and
they weigh about 1,000 pounds.
A: Where do they live? B: Their favorite habitat is the water
under the trees in mangrove swamps.
A: Why are they endangered?
B: Some of the swamps have become
polluted. Also, there sometimes isn’t
enough food for all of them. Explanation 1.I am like this animal because I am
strong and intelligent.
be like=look like=be similar to
像，看起来像。如：
He is like his father. 他像他的父亲。
= He looks like his father.
= He is similar to his father. 这里的like作介词，意思为“像”，like 还可做动词用，表示“喜欢”，like（doing）sth. 喜欢做某事。如：
He likes his father very much.
他很喜欢他的父亲。
Mary likes playing volleyball.
玛丽喜欢打排球。2.How big are manatees? 海牛有多大？
how big... 询问体重。以how组合的疑问词组有很多，如：
how old 询问年龄 how often询问频率
how long询问动作持续的长短
how much询问质量或者价钱
how far 询问距离 how many询问数量
how soon 询问过多久3….they weigh about 1,000 pounds,
……他们大约重1000磅。
weigh 称……重量，测……重量。如：
He weighed the stone in his hand.
他用手掂了掂这块石头的重量。
The piece of meat weighs four pounds.
这块肉重四磅。 weight 还可用做名词，重量。
如：
What is your weight？
你的体重是多少？4. We’re trying to save the manatees.
我们正在竭尽全力拯救海牛。
Try to do =try one’s best to do
努力去做某事。如：
Every student should try to study hard in order to study in a university.
为了进入大学学习, 每个学生都应该
努力学习。Grammardo / doesdidbe (am / is / are) doinghave / has donewas / were donehave / has been done 定义：现在完成时表示到目前为止已经完成，并对现在留下某种后果和影响的动作。
1. 表示过去发生的某一动作对现在造成的影响或结果,常与一些时间状语。现在完成时have / has + 动词的过去分词 如: already, yet, ever, never, just, before, once, twice 等连用, 也可以和包括现在在内的时间状语, 如these days, today, this year, so far 等连用。 2. 表示过去发生的动作或存在的状态,一直持续到现在,也许还将继续下去,可以和表示从过去某一时刻延续到现在的一段时间的状语连用。
即for +时间段, since+时间点/从句, in the last ten years等, 谓语只可用延续性动词。 2. has / have been to
去过某地表示某人的一种经历,可与once, twice, already, ever, never等连用。
have/has gone to
去某地了,说话时某人已离开此地,在去某地的途中或已在某地。 have / has been in
逗留在某地 (已经一段时间)。 常和for ten days, since I came here等连用。1. Where is Jim? He ___________ Wuhan.
2. My parents ___________ the Great Wall twice. They like there very much.
3. _____ you ever _______ to the Happy valley?
4. How long ____ Peter _______ the West Hill farm?have been to Have been to hasbeen in has gone to
5. My sister __________ the shop. She will be back in two hours.
6. She ___________ Shanghai. She isn’t here.
7. She __________ Shanghai. She is here.
8. She __________ Shanghai for two years.has gone to has gone to has been to has been in 3. already ---------- yet 已经

用于肯定句用于否定句, 疑问句1. She has not seen this film _____.
She has _______ seen this film.
2. I have ______ combed my hair.
Have you combed your hair ____.
3. He has _______ watched a video.
He has not watched a video _____.alreadyalreadyalreadyyetyetyet4. 现在完成时中延续性动词和终止性动词 英语动词根据词义可分为两种,一种是延续性的,一种是终止性的,终止性动词(也可称为非延续性动词,瞬间动词,或点动词),如:become, begin, buy, borrow, arrive, die, finish, get to know, go, join, marry, start, stop等。表示动作的发生
与结束于一瞬间完成,不能再延续,所以它的现在完成时不能和表示延续的时间状语连用,即不能与表示一段时间的状语, for+时间段, since+时间点/从句连用,也不能用在how long引导的特殊疑问句。 初中英语课本中常见终止性动词有: leave, go, come, arrive, begin, buy, borrow, die, join, become 等。
终止性动词要表示持续时, 可用以下方法： ??????????? ?
⑴ 将时间状语改为时间段 + ago, 句中谓语动词用一般过去时。eg. 我弟弟参军两年了。
My brother joined the army two
years ago.????????????? ?
⑵ 若保留for + 时间段, since+时间点/从句, 或用在 how long句型中, 则需将终止性动词改为相应的状态动词或延续性动词。come / go / arrive / get / reach / move
--- be in/at
open --- be open die --- be dead
close --- be closed become ---be
borrow --- keep put on --- wear
buy --- have 常见终止性动词与延续性动词 (或状态动词) 的对应关系如下:leave ----- be away (from)
begin / start ----- be on
fall asleep ---- be asleep
end/finish ----- be over
catch a cold ----- have a cold
join the army
---- be in the army be a soldier
join the Party
---- be in the Party be a Party member
1. 吉姆买了这只钢笔两年了。
Jim has had this pen for two years.
Jim has had this pen since two years
ago.
Jim has had this pen since 2003.
It is two years since Jim bought this
pen.
It has been two years since Jim
bought this pen.
Jim bought this pen two years ago.
2. 李雷自从2003年就参军。
3. 那部电影开始30分钟了。
4. 自从两年前这家商店就开了。
5. 那个老人已经死了五年了。
6. 莉莉六年前就离开家了。 现在完成时和一般过去时的区别：
现在完成时所表明的是过去发生的动作对现在的影响, 强调的是现在的情况, 不可以和表示过去的时间状语 yesterday, in 1991, three days ago last time, last night等连用。
一般过去时表明的是过去发生的事实, 和现在不发生关系。 ??????????? ? 5. 现在完成时中的 for 与 since for + 时间段与延续性动词的现在完成时连用 since + 时间点/从句。
I have kept the library book for a week. = I have kept the library book since a week ago. It is /has been + 一段时间 + since...
自从某事发生已有一段时间了。?
eg. It is /has been two years since
my brother joined the army. ?注意:
1. since 引导的从句中动词用过去时。
2. when 引导 的特殊问句不与现在完成时连用。
3. have got,has got 虽然是现在完成时,但 have got = have has got = has
1. It's a long time since we ______
(meet) last time, isn't it?????????????? ?
2. --I know you __________ (choose) a picture book among these. ?
--Yes,Have a look at it, please. ????????? ?
3. So far, spaceships without people ___________ (reach) the moon and some other parts of the universe. ???????????? ?methave chosenhave reached4. My father ____ home for nearly three weeks. A. has gone away from?????
B. has left C. has been away from?????
D. went away ????????????? ? 5. Mr and Mrs Green have ____ in China for a week. A. been?? B. got??
C. arrived?? D. reached 近义句转换：
1. Jack joined the League five months ago.
Jack _________ a League member five months ago.
2. It’s a long time since we met last.
We _______ ____ each other for a long time since we met last time.has beenhaven’tseenFill in the blanks with the right forms of the given words.
1. Every day my mother _____(get) up early.
2. The dinosaur eggs _____________ (discover) many years ago by scientists.
3. Listen! Some children ___________ (sing) an English song over there. getswere discoveredare singing4. In our hometown there used to ___(be) many old trees.
5. My work __________________ (not finish) yet. I can’t go out to play with you.behasn’t been finished【运用】根据括号中所给动词, 用其正确时态填空。1. Frank _____ (help) his mother with the housework on Sundays.
2. I _______ (become) a middle school student three years ago.helpsbecame3. —Hello! May I speak to your father, please?
—Sorry, my father ________ (go) to Shanghai. He went there this morning.
4. —What’s the noise?
—Jane and her sister ___________ (watch) TV.has goneare watching5. They ________ (have) eggs and bread for breakfast tomorrow morning.
6. He ___________ (cross) the street when he was hit by a bike.was crossingwill havePlease listen to the conversations again. Make some sentences with different tenses. Homework