祈使句否定Let him go there的否定为 Don't let him go there.而 Let's go there 的否定为 Let's not go there.为什么?怎样辨别?

祈使句否定Let him go there的否定为 Don't let him go there.而 Let's go there 的否定为 Let's not go there.为什么?怎样辨别? let's him go.改为否定句 I let him go to wacth TV的否定句 let him go to see the tigers的否定句 Let 型祈使句的否定形式能不能是这样的：Don't let him open the door. 将下列祈使句改成否定句.1.Come here early.2.Ask him.3.Piease wait for her.4.Read the book carefully.5.Let`s go there together. 把下列祈使句变成否定句.1、Come here early.__________把下列祈使句变成否定句.1、Come here early.____________.2、Please wait for him.____________.3、Sit under the tree,please.____________.4、Let' s go swimming .____________.5 怎样改祈使句We go and see him.该祈使句 go to themuseum now.改否定祈使句 Let's go to the playground.改为否定句如何改?为什么?如果是Let him go to the playground改为否定句如何改? If you love him,let him go. 将下列祈使句改为否定句：Ask him 变否定句.Let`s tell him. let him come in.变否定句 Let him go to see the tigers.(改为同义句）打错了，是改为否定句 let's go running祈使句为什么不用动词原形 如何将祈使句Let`s go and practice 改为陈述句? you may go and see him 怎么改改成祈使句