牛津译林版英语8A-Unit5-grammar课件.ppt

1、1.I may die without them.2.They may become dishes on the table any time.3.If we do nothing,soon there may be none left!may 情态动词情态动词 表示猜测和可能表示猜测和可能肯定句：may 的结构：的结构：否定句：e.g.她可能开车去市中心购物了。他们可能不是医生。maydrivetomaybenot辨析！辨析！可能不可能不.may not do/be.*不可能是不可能是.cant be.*1.Millie went to Shanghai yesterday.The girl

2、 over there _ _ her.cantbe2.Peter _ come with us tonight,but he isnt very sure yet.A.must B.may C.can D.willBAt the moment,she _ _ _ with her classmates.3.此刻她可能正在和同学们玩。此刻她可能正在和同学们玩。maybeplayingMillie is in the zoo.She is telling Sandy on the phone about what happens.Complete what Millie says using m

3、ay with the words in brackets.1.The elephant is going towards the water.It _(need)a bath.may need2.The little boy is crying when he saw the tigers.He _(be)afraid of them.3.I cannot go near the lions and tigers.They _(hurt)me.4.The baby panda is not drinking its mums milk.It _(not be)hungry.may bemay

4、 hurtmay not be5.The monkeys are jumping around.They _(be playing)with each other.6.The horse is standing with its eyes closed.It _(be sleeping).may be playingmay be sleepingB Using verbs+to-infinitives当我们要表示当我们要表示“想做某事、需要做某事想做某事、需要做某事或决定做某事或决定做某事”时，就会出现时，就会出现两个动词两个动词连用的情况连用的情况，这时应如何表达呢？，这时应如何表达呢？Us

5、ing verbs+to-infinitives 当句子中已经有当句子中已经有谓语动词谓语动词，而我们表达不，而我们表达不止一个动作概念时，那么，止一个动作概念时，那么，主要行为动主要行为动词后面的动词采用词后面的动词采用“to+动词原形动词原形”的的结构，我们把这种结构称为结构，我们把这种结构称为动词不定式动词不定式（有时可以不带（有时可以不带to）。其肯定形式是）。其肯定形式是“to do”，其否定形式是，其否定形式是“not to do”。在。在句子中不能单独作谓语，动词不定式没句子中不能单独作谓语，动词不定式没有人称和数和时态的变化，。有人称和数和时态的变化，。什么是动词不定式什么是动

6、词不定式(to-infinitives)？want to do sth.,need to do sth.decide to do sth.agree to do sth.同意做同意做.begin to do sth.开始做开始做.decide to do sth 决定做决定做.fail to do sth.做某事失败做某事失败forget to do sth.忘记忘记做做.hope to do sth 希望做希望做.1.在英语中某些及物动词后接动词不在英语中某些及物动词后接动词不定式作宾语定式作宾语,常用的此类动词有：常用的此类动词有：learn to do sth 学着做学着做.plan t

7、o do sth 计划做计划做.prepare to do sth.准备做准备做.remember to do.记得记得做做.try to do sth 努力做努力做.want to do.想要做想要做.I hope to watch the sunset我想看日落。我想看日落。I want to take some photos of thesunrise.我想拍几张日出的照片。我想拍几张日出的照片。今年暑假他打算去参观长城？今年暑假他打算去参观长城？He is planning to visit the Great Wall this summer holiday?more verbs+t

8、o do（作宾语）（作宾语）:need promise seem start/begin would like cant wait try ones bestask sb.to do tell sb.to doinvite sb.to do want sb.to dowould like sb.to doteach sb.to doadvise sb.to do need sb.to do 2.to do 做宾语补足语做宾语补足语hear sb.dosee sb.do watch sb.do make sb.dolet sb.dohelp sb.do但有的动词后跟但有的动词后跟作宾补，如作宾补

9、，如:remember to do sth.记得去做某事记得去做某事 remember doing sth.记得做过某事记得做过某事forget to do sth.忘记去做某事忘记去做某事 forget doing sth.忘记做过某事忘记做过某事e.g.Tom,记得课后和我们一起打篮球。记得课后和我们一起打篮球。Tom,remember to play basketball with us after class.我记得上个月写了一封信给你。我记得上个月写了一封信给你。I remembered writing a letter to you last month.stop to do sth.停下停下(正在做的正在做的)事去做事去做 (另一件另一件)事事stop doing sth.停止做停止做(正在做的正在做的)事事e.g.让我们停下来休息一下。让我们停下来休息一下。Lets stop to have a rest.不要说话，不要说话，老师来了。老师来了。Stop talking.The teacher is coming.We dont use to after these verbs.Finish the exercise on page 62 More about wild animals.