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求 BEForE Doing sth的用法?????

before在这里只是个介词,所以后面需要跟动词的ing形式,与时态无关。因此,before doing sth.前是可以用过去时态的。 去电影院前,我去了图书馆可以如下翻译: I went to the library before going to the cinema. 如果帮助到你的话,请采纳,谢谢

before making a decision相当于before you make a decision 这是固定的语言语法哈

before 后面是接doing,但是请注意:before后面有一个it。这个it是主语,所以选stops作其谓语。 stopping 不可以作谓语。

We must have a plan before doing any work.做任何工作前,我们必须订好计划。 We all should warm up before doing some exercises.开始做运动前,我们都应该热身。 He always consulted others before doing anything .他做什么事情都先和别...

前者

1、before后面直接跟动词的,那个动词就用ing形式; 例如:I go to the WC at first before going home. (在回家之前先去趟厕所) before后面有宾语的,其后动词就用原形; 例如,I clean the room at first before you come here. (在你来这儿...

I studied English very well before 3 years ago. 过去时I was grauated from college school before one year. 过去完成时

对头!

加。动词放在介词后要加ing,就好比你把sb去掉这个句子一样成立一样,可以忽略不计,ing照加。

跟try to do 和try doing一样 to do的表示努力做,想方设法做 而doing仅仅表示尝试做(没有很努力的意思) 望采纳^-^ 别人请勿抄袭,谢谢。

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