新概念一直被視為英語學(xué)習(xí)的經(jīng)典教材,新概念第一冊是基礎(chǔ)性學(xué)習(xí)寶典,為大家總結(jié)了一些知識(shí)點(diǎn)語法,希望大家輕松學(xué)習(xí)新概念第一冊。
1.情態(tài)動(dòng)詞can(能夠), must(必須), may(可以)
結(jié)構(gòu):主語+can/must/may+動(dòng)詞原型
He can make the tea.
Sally can air the room.
We can speak English.
★變否定句在情態(tài)動(dòng)詞后面加not
He cannot make the tea.
Sally cannot air the room.
We cannot speak English.
★變疑問句將情態(tài)動(dòng)詞移到句首
Can he make the tea?
Can Sally air the room?
Can we speak English?
★特殊疑問句:
What can you do?
★肯定回答及否定回答
Yes, he can. No, he cannot.
Yes, she can. No, she cannot.
Yes, we can. No, we cannot.
注意:情態(tài)動(dòng)詞的句子沒有第三人稱單數(shù)的變化,不要在情態(tài)動(dòng)詞或動(dòng)詞后面加S。
2.Must/have to的區(qū)別
must 表示必須,是主觀上覺得應(yīng)該做,have to是不得不,是由于客觀條件逼迫的必要要做
must 只能用在表示現(xiàn)在和將來的句子里,而have to do可以用在任何時(shí)態(tài)
3.must, may, might表示猜測:
must do 表示對現(xiàn)在事實(shí)的猜測
must have done表示對過去事實(shí)的猜測
must have been doing 表示對過去正在進(jìn)行的事實(shí)的猜測
can’t/couldn’t 表示不可能
may/might do, may/might have done表示沒有任何事實(shí)依據(jù)的猜測,might的可能性更小。
4.need 用法:
表示“需要”時(shí)為實(shí)意動(dòng)詞,后面可以加名詞,也可以加不定式:
I need to have a rest.
I need a pen. Do you need any beer? No, I don’t.
Need doing=need to be done,表示被動(dòng)
The flowers need watering.
Need在否定時(shí)做情態(tài)動(dòng)詞使用
You needn’t go so early. =You don’t need to go so early.
Must I clean the desk right now? No, you needn’t.
新概念第一冊能夠給大家奠定很好的基礎(chǔ),還在等什么?