牛津译林版英语8A Unit5 grammar课件（共22张PPT）

课件22张PPT。Unit 5
Wild animals I may die without them.
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 表示猜测和可能肯定句： may do/ be... 可能...may 的结构：否定句： may not do/ be... 可能不...e.g. 她可能开车去市中心购物了。
他们可能不是医生。
She _______ _______ _______ the city centre to do some shopping.They_______ _______ ________doctors.maydrivetomaybenot辨析！！！可能不... may not do/ be ....***不可能是... can't be...***1. Millie went to Shanghai yesterday. The girl over there ________ ________ her.can'tbe2. Peter?______ come?with?us?tonight,?
but?he?isn't?very?sure?yet. A.?must?? B.?may? C.?can D.?willB
At the moment , she ____ _____ _____ with her classmates. 3. 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 may with the words in brackets.In the zoo1. 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 mum’s milk.
It _____________ (not be) hungry.may bemay 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“想做某事、需要做某事
或决定做某事”时，就会出现两个动词
连用的情况，这时应如何表达呢？Using verbs + to-infinitives 当句子中已经有谓语动词，而我们表达不止一个动作概念时，那么，主要行为动词后面的动词采用 “to + 动词原形”的结构，我们把这种结构称为动词不定式（有时可以不带to）。其肯定形式是“to do”，其否定形式是 “not to do”。在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，。什么是动词不定式(‘to-infinitives’)？want to do sth.,
need to do sth.
decide to do sth.agree to do sth. 同意做...
begin to do sth. 开始做...
decide to do sth． 决定做...
fail to do sth. 做某事失败
forget to do sth. 忘记做...
hope to do sth． 希望做... 1. 在英语中某些及物动词后接动词不定式作宾语, 常用的此类动词有：learn to do sth． 学着做... plan to do sth． 计划做...
prepare to do sth. 准备做...
remember to do. 记得做...
try to do sth． 努力做...
want to do. 想要做... I hope to watch the sunset．
我想看日落。
I want to take some photos of the
sunrise.
我想拍几张日出的照片。
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 + to do （作宾语）:
need promise seem start/begin + to do
would like can’t wait try one’s bestask sb. to do
tell sb. to do
invite sb. to do
want sb. to do
would like sb. to do
teach sb. to do
advise sb. to do
need sb. to do 2. to do 做宾语补足语hear sb. do
see sb. do
watch sb. do
make sb. do
let sb. do
help sb. do但有的动词后跟不带to的不定式作宾补，如:remember to do sth. 记得去做某事

remember doing sth. 记得做过某事区别forget to do sth. 忘记去做某事

forget doing sth. 忘记做过某事e.g.
Tom, 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。
I remembered writing a letter to you last month.stop to do sth. 停下(正在做的)事去做
(另一件)事
stop doing sth. 停止做(正在做的)事e.g. 让我们停下来休息一下。
Let’s stop to have a rest.
不要说话， 老师来了。
Stop talking. The teacher is coming.区别We don’t use ‘to’ after these verbs.keep
practise
spend
finish
enjoy
have fun/ have a great time
look forward to
have problems
be busy+ doingFinish the exercise on page 62— More about wild animals.Homework