Don't eat anything until you see the dentist.为什么用see动词原形,这个题是not...until的什么用法?

来源:学生作业帮助网 编辑:作业帮 时间:2024/04/28 18:24:57
Don't eat anything until you see the dentist.为什么用see动词原形,这个题是not...until的什么用法?
xSn@u@馛~Pay@x%JH@ TA!dž_/Y%;=ǏI II"Q" RT55\#ȞVڅm5e{`$ (е1sF̝LTpcRL:ʧ♜ 8=9&&nr\!݀ڔ@yͮEh;nfqI(z8xa4uPo#7

Don't eat anything until you see the dentist.为什么用see动词原形,这个题是not...until的什么用法?
Don't eat anything until you see the dentist.为什么用see动词原形,这个题是not...until的什么用法?

Don't eat anything until you see the dentist.为什么用see动词原形,这个题是not...until的什么用法?
until/ if/as soon as /unless等引导的时间状语从句或条件状语从句用一般现在时代替一般将来时.夲句由于从句主语为非单数第三人称,故用动词原形.

until的用法有很多,它表示“直到……时候”的意思,而not……until是指“在……之前不要做什么事”。这句话的中文翻译大致是在去看牙医之前不要吃任何东西。翻译过来就知道,这是还没发生的事,当然是用原形。

not ...until ..句式要求until 后用一般现在时,主句用一般将来时,或祈使句
you won't go to bed until you finish your homework.
Don't get off the bus until the bus stops .
还可以主从句都用一般过去时。 如 。 I didn't go to bed until I finished my homework.