Make sure you turn off the lights是正确的吗?是祈使句吗?如何判别祈使句呢?

来源：学生作业帮编辑：作业帮分类：英语作业时间：2024/11/08 21:35:58

正确.是的.
祈使句是指用于表达命令、请求、劝告、警告、禁止等的句子,祈使句最常用于表达命令,因此在学校文法中也常称为命令句.祈使句因对象（即主语）是第二人称,所以通常都省略.祈使句的动词都为一般现在时,句末则使用句号来表示结束.祈使句无主语,主语you常省去,动词原形谓语当,句首加don't否定变肯定,朗读应当用降调,句末常标感叹号.
肯定结构:
1.Do型(即:动词原形(+宾语)+其它成分).如:Please have a seat here.请这边坐.有的祈使句在意思明确的情况下,动词可省略.如:This way,please.= Go this way,please.请这边走.
2.Be型(即:Be + 表语(名词或形容词)+其它成分).如:Be a good boy!要做一个好孩子!
3.Let型(即:Let + 宾语 + 动词原形 + 其它成分).如:Let me help you.让我来帮你.
否定结构:
1.Do型和Be型的否定式都是在句首加don't构成.如:Don't forget me!不要忘记我!　　Don't be late for school!上学不要迟到!
2.Let型的否定式有两种:“Don't + let + 宾语 + 动词原形 + 其它成分”和“Let + 宾语 + not + 动词原形 + 其它成分”.如:Don't let him go./ Let him not go.别让他走.
3.有些可用no开头,用来表示禁止性的祈使句.如:No smoking!禁止吸烟!No fishing!禁止钓鱼!

Make sure you turn off the lights是正确的吗?是祈使句吗?如何判别祈使句呢? No parking!是祈使句吗?you must turn left.是祈使句吗?Open the window,pl Make sure all the lights turn off when you leave the room.这句 I`m leaving now.( )you turn off the lights.A To make sure B Be sure to turn off the lights when you leave 的句型转换 i am leaving now._____you turn off the lights A to make sure lucy,you clean the window.这是祈使句吗?为什么 You had better是祈使句吗 Can you help me.是祈使句吗? don not forget the lights when you leave.A 是to turn off B是tu You must turn left at the bank.的祈使句 You can turn on the TV的祈使句形式