改否定句 Let's sweep the floor

改否定句 Let's sweep the floor 英语,祈使句改否定句将Let us sweep the floor.改为否定句,应该怎么改?英语中改否定句的方式都有哪些? Let's go to the park together.改否定句 Let ’s cross the road改 否定句 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? The man sweep the snow的否定句和一般疑问句怎么改? Let's go swimming in the river.改否定句是什么 Let's go home now.的否定句如何改 let's make some tea 改否定句 改否定句：Let them cross the road. 改否定句Let's go to the park at 6 o'clock.Let's not go to the park at 6 o'clock. Let.Me sweep.The not,floor,let's,the sweep（.）联句 Let’s see the pandas first.改为否定句 Let's take the green one.（改为否定句） let's sit under the tree改为否定句 Let’s move the furniture.（改为否定句） Let's play the piano.(变成否定句）