小学英语语法知识点汇总（三）

11.there  be结构 肯定句：There is a … Thereare … 一般疑问句: 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 plea Don’tsit down, plea. 13.现在进行时 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. 动词—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 14.一般现在时 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. 一般疑问句: 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.情态动词 can,must, should后面直接用动词原形。 eg: 1. I / He / She / They can sing. 2．You should keep quiet in the library.