11.there  be結(jié)構(gòu)

　　肯定句：There is a …

　　Thereare …

　　一般疑問句: Is there …?   Yes, there is./ No, there isn’t.

　　Arethere…?  Yes, there are. /No, there aren’t.

　　否定句： There isn’t ….

　　Therearen’t….

　　12.祈使句

　　Sit down please

　　Don’tsit down, please.

　　13.現(xiàn)在進行時

　　通常用“now”.

　　形式： be + verb +ing

　　eg: I am(not) doing my homework.

　　You/We/They are(not) reading.

　　He/She/It is(not) eating.

　　動詞—ing 的形式

　　Most verbs +ing walk—walking

　　Verbs ending in e -e + ing come—coming

　　Short verbs ending in a vowel + a consonant run –running swim—swimming

　　14.一般現(xiàn)在時

　　通常用 “usually, often, every day,sometimes”。

　　肯定句：

　　I go to school on foot every day.

　　She goes to school on foot every day.

　　一般疑問句:

　　Do you jump high? Yes, I do. / No, I don’t.

　　Does he jump high? Yes, he does. / No, he doesn’t.

　　否定句： We don’t go to school on Sundays.

　　My mother doesn’t like watching TV in the evening.

　　15.情態(tài)動詞

　　can,must, should后面直接用動詞原形。

　　eg: 1. I / He / She / They can sing.

　　2．You should keep quiet in the library.