二.系动词,在小学阶段主要学习涉及到be动词的用法。
be动词用法口诀(am is are was were)
我(I)用am,你(you)用are,
is连着他(he)、她(she)、它(it)。
单数不可数用is,复数名词全用are。
变疑问,往前提,句末问号莫丢弃。
变否定,更容易,be后not莫忘记。
疑问否定任你变,句首大写莫迟疑。
过去式单数用was,复数用were。
有关be动词的缩写
I am=I'm He is=He's She is=She's
it is=it's That is=That's
What is= What's Who is=Who's
Here is=Here's Where is=Where's
Let us= Let's is not=isn't
They are=They're We are=we're
are not = aren't
注:This is am not 没有缩写
三.最常用的助动词有: have, do, will, should(后面+动词原形)等。
它们表示不同的时态和语态。其中 do、have 是最基本的,它们没有词汇意义,只有语法作用,如协助构成否定句和疑问句等。
Do Does Did Have Has Had(以上六个词的否定均在后面+n’t ,) 引导的一般疑问句及其肯定和否定回答是小学学习的重点。
举例:
1.Do you like apples? Yes, I do.
2.Does your mother like fish? No,she doesn’t.
3.Did you come back yesterday? No,I didn’t.
4.Have you got a new book? Yes,I have.
5.Has Amy got a coat? No,She hasn’t.
四.情态动词
情态动词本身有一定的词义,表示说话人对有关行为或事物的态度和看法,认为其可能、应该或必要等。
can 能,可以 (否定 can’t)
I can ride a bicycle.我会骑自行车。
Can I help you?我可以帮助你吗?
Can you run fast? Yes, I can.