unless后面加什么

unless后面加动词根据实际情况而定,一般是原形；

作介词意思是除...外,在一般情况下,动词+ing；

unless

conj.除非;除非在…情况下;若非;如果不

Unless we start making some sales, we\'re done for.

如果我们还卖不出去，那我们就完了。

I sleep with the window open unless it\'s really cold.

天气若不很冷，我总开着窗户睡觉。

Unless something unexpected happens, I\'ll see you tomorrow.

如果不出意外，我明天去看你。

They refused to release their hostages unless certain conditions were met.

除非某些条件得到满足，否则他们不会释放人质。