初中英语知识点：陈述句

　　陈述句分肯定式和否定式

　　什么叫陈述句？

　　用来说明一个事实和表达说话人的看法或观点的句子叫做陈述句。陈述句朗读时通常用降调，句末用句号。

　　She is a good student.

　　肯定式

　　主语＋系动词＋表语

　　主语＋谓语动词

　　主语＋谓语动词＋宾语

　　主语＋谓语动词＋宾语＋宾语补足语

　　主语＋系动词＋表语

　　这是我爸爸。

　　This is my father.

　　今天暖和。

　　It is warm today.

　　主语＋谓语动词

　　老师笑了。

　　The teacher smiled.

　　我不会读。

　　I can't read.

　　主语＋谓语动词＋宾语

　　我想要一个热狗。

　　I want a hot dog.

　　我喜欢她。

　　I like her.

　　主语＋谓语动词＋宾语＋宾语补足语

　　她英语讲得好。

　　she speaks English well.

　　我很喜欢她。

　　I like her very much.

　　否定式

　　否定句是指句意含有不,没有等意思的句子.

　　He is not a student.他不是学生。

　　I am not a boy. 我不是一个男孩。

　　1.在be动词后加not

　　2.在can，should， will等后加not

　　3.不含be动词也不含情态动词的，在动词前加助动词否定形式don’t/doesn’t/didn’t

　　4.当句子是祈使句时

　　在be动词后加not ,其他照抄

　　is → is not   isn't

　　are →are not   aren't

　　am →am not

　　was →was not  wasn't

　　were → were not  weren't

　　肯: He is a basketball player.

　　否：He is not a basketball player.

　　肯：There is a desk in the room.

　　否：There is not a desk in the room.

　　肯：They are Englishmen.

　　否：They are not Englishmen.

　　在can，should， will等后加not，其他照抄

　　can →can not  can't

　　should →should not  shouldn't

　　will →will not  won't

　　我会骑自行车。

　　I can ride a bike.

　　I can not (can't) ride a bike.

　　他明天会去学校。

　　He will go to school tomorrow.

　　He will not (won't) go to school tomorrow.

　　不含Be动词也不含情态动词时

　　主语+don’t/doesn’t/didn’t+动词原形+其它

　　We eat apples.

　　否：We don’t eat apples.

　　He eats apples.

　　否： He doesn’t eat apples.

　　I went to school yesterday.

　　否：I didn’t go to school yesterday.