1. Don't climb the tree.
Don't climb the tree,will you?
2. Open the door.
Open the door,won't you?
3. Let them play ball games
Let them play ball games,won't you?
反义疑问句一定要注意“前肯后否,前否后肯”
祈使句的反义疑问句：
(1)在肯定的祈使句后,为了使祈使句听起来比较婉转,客气,可加一个简短的问句,如：will you ? would you? can you?最常用的的是：will you?或won't you?
例：Speak louder ,will you?请大声点,好吗?
Read it slowly ,can/can't you?
注意咯：在否定疑问句的祈使句后,只能用肯定的疑问部分,will you?例：
Don't wait for me ,will you ?
（2）在Let's祈使句后加上shall we ?或shan't we?应为let's包含谈话的对方在内,而在Let us （me ,her…）后要加上will you ?或won't you?应为Let us 不包括谈话的对方在内.