Everyone is in the classroom, aren’t they?Everything begins to grow in spring, doesn’t it?Nobody will go, will they?16)带情态动词dare或need的反意疑问句，疑问部分常用need(dare )+主语。
We neednot do it again, need we? He dare not say so, dare you? 当dare, need为实义动词时，疑问部分用助动词do +主语。
She doesn't dare to go home alone, does she? 17)省去主语的祈使句的反意疑问句，疑问部分用will you。Don't do that again, will you? Go with me, will you / won't you? 注意:Let's 开头的祈使句，后用shall we?
Let us开头的祈使句，后用will you?
Let's go and listen to the music, shall we? Let us wait for you in the reading-room, will you?