内容正文:
语法突破 写作指导
1.祈使句
(1)定义:用于表达命令、请求、劝告、警告、禁止等的句子叫作祈使句。祈
使句的动词都为一般现在时,句末则使用句号或感叹号来结束。
(2)类型:
①V型:动词原形+其他
②Be型:Be+形容词
③Let 型:Let sb.+ 其他
④No 型:No+ v.-ing/ n.
(3)祈使句用法口诀
祈使句,祈使句,请求命令或建议。主语是you常省去,动词原形开头记。否定
形式加Don’t,Let否定有两种。想更客气please,句首句末没关系。
2.if从句+祈使句
“if从句+祈使句”相当于汉语的“如果……,就……”,这种结构来表达建议。
If you are ready,let’s begin.
如果你准备好了,就让我们开始吧。
Ⅰ.用括号内所给词的适当形式填空
1.If you want to get good scores, (study) hard.
2.If you work harder,you (pass) the exam.
3.No (run) here.Please be quiet.
4. (not walk) on the grass.
5.I don’t know if he (come) tomorrow.If he .
(come),I will meet him at the airport.
study
will pass
running
Don’t walk
will come
comes
Ⅱ.句型转换
6.Hurry up,or you will not catch the early bus.(改为同义句)
you up,you catch the
early bus.
7.You will fail in the final exam if you don’t study hard.(改为同义句)
You will fail in the final exam