一．动词形式
一般现在时的动词形式要么用动词的原形形式，要么用动词的“单三”形式。 若纯是动词be ，则用am，is，are 。 例：
1）I like music. He likes music. And they like music, too. 2）I don’t like music. He doesn’t like(likes × )
music. And they don’t like
music, either （ 也 ） . 3 ）
He can swim(swims × ).
比较：
He swims well.
4 ）
You are happy. I am happy. He is happy. And we are all happy. 5 ）
Jim is at home.
比较：
He may be(is ×
) at home.
【注】
动词“单三”形式的构成规则，与名词复数的构成规则一样（略） 。
比较：●现在进行时的动词形式： be(am, is, are) + doing （动词的现在分词）
●一般过去时的动词形式：一律用动词的过去式。 如：
I liked music.
●一般将来时的动词形式：①助动词 will+
动词原形。 如
I will like music. ②
be(am, is, are) going to + 动词原形。 如：
I am going to work.
二．用法 ㈠
表示主语现在经常性的或习惯性的动作，或者现在经常发生的事情。 例： 1 ）
He usually gets up at six in the morning. 2 ）
There is an exam every week. ㈡
表示主语现在的性格 /
性质、状态、特征、身份、能力等（即：性状特身能） 。
例： 1 ）
I like sports. I think sports are interesting. 2 ）
He is at home now. He is ill. 3 ）
He looks like his father. He is a bit heavy.
4 ）
Her father is a doctor. And her mother is a teacher. 5 ）
He can speak English. And he speaks English well. ㈢
表示客观事实或真理。
例：
The earth goes around the sun. * ㈣
表示现在说话时正在发生的事情。此用法常见于 here 、 there
开头的句子等。 例： 1 ）
Listen! There goes the bell! 你听！铃响了！
2 ）
Look! Here comes the bus! 快看 !
车来了！ * ㈤
表示在将来发生的事情。 （常常只限于某些说法） 例： 1 ）
Tomorrow is Thursday.
2 ）
We will go to the park if it
doesn’t rain tomorrow . 3 ）
I’ll tell him about it
when he comes back next week .
三．练习
用所给单词的适当形式填空 1 ）
He ______ (play) soccer every day.
2 ）
We often ______ (swim) with our friends. 3 ）
She can ______ (dance). And she ______ (dance).\\ 4 ）
Jim ______ (be) good at drawing. But he ____ (not do) well in music. 5 ）
______ your brother often ______ (watch) TV in the evening? Yes, he ______ (do).
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