(完整版)人教版九年级英语第十三单元知识点总结
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② He is always helping others.他总是帮助别人。(他真是个好人)
4)对于come, go, leave, arrive, start,fly,drive等表示位置移动的动词常可用进行时态表将来。
①He is leaving on Wednesday。②Mary isn't here at the moment。She is coming later。
2. used to do见第四单元及use用法
3. 被动语态见第五单元
注意:接双宾语的词的被动语态;make /let /have sb do的被动语态;see/ hear /notice /find /observe sb do 的被动语态;It’s said/reported/believed/supposed/well-known;及无被动语态的三种情况(感官动词、不及物动词、sell/write等)
4. 现在完成时:
用法:①过去发生的动作对现在造成的影响或结果:强调结果
Yesterday I finished my homework,that’s to say, I have finished my homework now。
②过去已经开始一直持续到现在的动作或状态:强调继续
I have lived here since 1990。
现在完成时的构成 have/has+过去分词
现在完成时的四个基本句型
肯定句 He has finished the work。一般疑问句 Has he finished the work?
否定句 He has not finished the work。两回答 Yes ,he has. No, he hasn’t。
特殊疑问句 What has he done?
在下列情形下用现在完成时
The shop has opened for 3 years。(错) 改为:The shop has been open for 3 years。
⑤die →be dead
His father has died for 3 years.(错) 改为:His father has been dead
for 3 years.
⑥finish/end→ be over
He has finished the work for 3 days。(错)改为:The work has been
over for 3 days
⑦join I have joined the army for 3 years.(错)
改为:I have been in the army for 3 years. 或I have been a soldier for 3 years.
⑧buy /catch → have
I have bought the bike for 3 years。(错)改为:I have had the bike for 3 years。
He has caught a cold for 3 days.(错)改为:He has had a cold for 3 days.
⑨borrow → keep
I have borrowed the book for 3 years。(错)改为:I have kept the book for
3 years.
还有其它的归纳如下:
break →be broken get up →be up marry →be married become → be lose → be lost
5. 情态动词
1)情态动词本身有一定的词义,表示说话人的情绪、态度或语气,但不能单独作谓语,只能
与其他动词构成谓语。常见的有:can (could), may (might), must, need, shall
(should), will (would)等。
2)情态动词无人称和数的变化, 后接动词原形。否定式是在情态动词后面加not.个别情态动词有过去式形式,也可用来表达更加客气、委婉的语气。
1.can和could的用法
(1)can/could 表示“能力;许可;可能性”等。could 为 can 的过去式。如:Can I use your bike?
(2)can 用在疑问句中,表示征求意见、请求许可,答语仍用 can; could 用在疑问句中,比can 更委婉、客气,是一种礼貌的说法,并不表示过去时态,答语用can,而不能用could. 如:-Could you tell me the way to the zoo?—Sorry. I can’t。 I'm new here。
[注意] can 和could 只能用于现在时和过去时两种时态,将来时中用 be able to。另外,can't 可表示否定推测.如:That ______ be Mr Wang. He has gone to Beijing。
2.may和might的用法
may/might 意为“可以”,表示同意、许可或请求对方许可,也可表示祝愿。may的否定形式为may not。might 是may 的过去式,有两种用法:一种表示过去式;一种表示虚拟语气,使语气更加委婉、客气,或表示可能性更小。以may开头的一般疑问句,其否定回答用mustn't,而不用 may not.如:______ I use your pen? 我可以用你用的钢笔吗?
You may put on more clothes. May you be happy!
Might I borrow some money now?He might be alive。
3。must的用法
must 意为“必须,一定,准是",表示说话人认为有必要做某事,或命令、要求别人做某事以及对事物的推测。否定形式mustn't,表示“不得”,“一定不要”。如:
I ______ finish my work today.You mustn’t drive after drinking.
(1)must 与 have to 的区别: must 表示说话人的主观意愿;have to 表示客观需要.如:
I must do my homework first。It is raining hard outside; I _____ stay at home。