课件26张PPT。.短语检测
1.确切地;肯定地
2.自然资源
3.用完;耗尽
4.依赖;依靠
5.替代性能源
6.除掉;处理掉
7.免费
8.履行;实施;执行
9.被附在/粘在
10. 小心;当心 for sure
natural resources
run out/use up
rely on
alternative energy
get rid of
free of charge
carry out
be attached to
look out/be careful 祈使句imperative sentenceTurn right.Don’t go faster than 90 kph.Don’t turn left. / No left turn.Don’t stop. / No parking.Don’t walk. / No pedestrians.adviceinstructionspermissioninformationinstructions祈使句(Imperative Sentence)可以表达说话人的意愿、请求、叮嘱、号召、命令或建议,它的主语you (听话人)通常省略,谓语动词用原形,句子末尾用感叹号或句号,读时用降调。1. 祈使句的肯定形式 be型(系动词原形be+表语+其它)
Be careful! Don‘t go too high.
Be quiet, everyone!
2) do型(行为动词+宾语+其它)
Come in, please!
Please open your books!
3) let型(Let+宾语+动词原形+其它)
Let me have a look.
Let me help you. 1) be型(Don't+be+表语)
Don't be lazy!
Never be late again.
2) do型(Don‘t+行为动词原形+其它)
Don't throw the ball like that.
Don't worry. I'll soon be all right.
Never do it like that.
Don’t anybody say a word. 2.祈使句的否定形式3) let型有两种否定形式:
1) Let+宾语+not+动词原形+其它。
Let him not go there.
Let's not waste time.
2) Don’t+let+宾语+动词原形+其它。
Don't let her go there.
Don't let the water run into the room.4) No+ v-ing/n. 表示禁止做某事No parking/smoking/admission!3. 祈使句的类型1). 不带主语的祈使句
Be careful next time!
Come and see me whenever it is convenient to you.2). 带主语的祈使句;
为了加强语气或指明同谁说话,可在动词前加上主语。加上主语时,由于是面对面说话并直呼其名,故不论第几人称,动词均用原形,不考虑主谓一致问题。Nobody move!
Mary come here —everybody else stay where you are.
3.You mind your own business!你不要多管闲事!
3). (条件)祈使句+and/ or+ (结果)简单句
此句型为“条件与结果”并存的句式,其中的祈使句可转化为if条件句。1. Work hard and you will succeed.If you work hard, you will succeed.Working hard, you will succeed.2. Hurry up, or you will miss the last bus.If you don’t hurry up, you will miss the last bus.Open the window, please.
Will you go fishing with me this afternoon?
Would you do me a favor?
Could you show me how to get to the railway station?
Hand the dictionary to me, will you?
Let’s go out for a walk, shall we?
Why don’t you get something to drink?4).1.Will you / Would you / Could you + 动词原形?
2.祈使句句末, + please?
3.祈使句 句末, + will you / shall we?
4.Why not + 动原 …..?
5.Why don’t you + 动原 ….?
5).祈使句的反义疑问句Open the door, _________________?
Don’t forget, _________________?
Let’s go there at once, __________?
Let us go there, ______________?will you?/won’t youwill youshall wewill you6).祈使句的强调形式
为了表示强调或加强命令、劝告的语气,使句子更具有说服力,常在其谓语动词前加上do。Do tell me where to buy the tickets for the concert.
Do be careful next time!祈使句历届高考大观:
1. —Sorry, Joe. I don’t mean to…
—Don’t call me “Joe”. I am Mr. Parker to you, and _____ you forget it!
A. do B. didn’t C. did D. don’t答案选D。经调查,本题失误者甚多,除了时态上的原因之外,还有语序上的原因。在否定结构中,you应放在don’t之后,来表达对方对自己称呼错误的不满,意为,“你可不要忘了!”。2. —Have another cup of coffee, OK ?
—___________.
A. With my pleasure
B. You are welcome
C. I can manage it
D. That’s very kind of youD3. —Alice, you feed the bird today, ______?
—But I fed it yesterday.
A. do you B. will you
C. didn’t you D. don’t you B4). —Write to me when you get home.
— _________. A. Yes , I must B. Yes, I should
C. Yes , I will D. Yes , I can C5). _______ some of this juice — perhaps you’ll like it.
A. Trying B. Try
C. To try D. Have try B6). ______ straight on and you’ll see a church. You won’t miss it.
A. Go B. Going
C. If you go D. When going
7). There are eight tips in Dr. Roger’s lecture on sleep, and one of them is: ____ to bed early unless you think it is necessary.
A. doesn’t go B. not to go
C. not going D. don’t go AD8). Go and join in the party. ______ it to me to do the washing –up.
A. Get B. Remain
C. Leave D. Send
9). Tom , ______ yourself. Did you forget the school rules?
A. behave B. believe
C. perform D. conduct CA10. —English has a large vocabulary, hasn’t it?
—Yes. _______ more words and expressions and you will find it easier to read and communicate.
A. Know B. Knowing
C. To know D. Known
11). Stand over there _______ you’ll be able to see it better.
A. or B. while C. but D. and AD12). —I’ve never seen anyone run so fast.
—______ David go.
A. just watch B. just to watch
C. just watching D. just having watched
13).—Don't forget come to my birthday party tomorrow.
— ________ .
A. Yes , I won’t B. No , I won’t
C. No , I will D. Yes, I will AB14). Be sure to write to us, ________?
A. will you B. aren’t you
C. can you D. mustn’t you
15). One more week, ______ we will accomplish the task.
A. or B. so that
C. and D. if AC16). _____ blood if you can and many lives will be saved A. Giving B. Give
C. Given D. To give
17). ______ this book and tell me what you think of it.
A. Look through B. Look on
C. Look into D. Look upBA18). ________it with me and I'll see what I can do
A. When left B. Leaving
C. If you leave D. Leave
19). ________down the radio — the baby's asleep in the next room.
A. Turning B. Turn
C. Turned D. To turn DB20). If you want help — money or anything, let me know, _____ you?
A. don’t B. will C. shall D. doBHomework:
1.Write a short passage with imperative sentences.
2.Do the exercises on your workbook page107.