英语句子中,when后面加原型还是ing

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英语句子中,when后面加原型还是ing

英语句子中,when后面加原型还是ing
英语句子中,when后面加原型还是ing

英语句子中,when后面加原型还是ing
是要加-ing的 无论过去或现在或以后
ex:
I always fail when cooking dinner.
I'm always excited when riding the rollar coaster.
I have always been imformed by my sister when talking.
不可以说
I always fail when cook dinner.
I'm always excited when ride the rollar coaster.
I have always been imformed by my sister when talk.

从句主句谓语一致,when后直接接动词,表主动和原因用ing ,表被动用过去分词。

主语一致加ing