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till untill主将从现

“从现”指的是在时间、条件及让步状语从句中用现在时态,包括一般现在时,现在进行时,现在完成时。如: We'll go climbing the hill if it doesn't rain tomorrow. Don't get off the bus until it has stopped. Don’t laugh at me when I'm speaki...

I will not leave until he comes.(主将从现) Don't leave until he comes.(主句是祈使句从句用现在时) I didn't leave until he came(主句是过去时,从句时态一致)

I won't turn off the lights until I go to sleep.我在睡觉之前不会关灯。

主句用将来时则从句用一般现在时,如:I won't go to bed until my mother comes back 或者主句从句都用过去时,如: I didn't go to bed until my mother came back.

时间状语从句和条件状语从句 not...until是时间状语从句

不是吧,谁教你的啊,if条件句才遵循主将从现的.有until的句子可以用好多时态的啊,过去时,现在时,将来时都可以的.

对 都是遵循主将从现原则

Not ....until 引导的时间状语从句,主句是将来时,从句是现在时,或遵循主过从过 I won't leave until he come 我不离开直到他回来

主从句都应遵循的时态规则是时态保持一致,即主句用现在时态,从句就要用与现在有关的时态,主句用过去从句就要用与过去有关的时态。例如:he was sleeping when I called him yesterday. 所谓的主将从现只有在状语从句中才有,意思是在表示将来...

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