作业帮各种英语时态的用法和结构.急.
来源：学生作业帮助网 编辑：作业帮 时间：2024/04/29 05:07:04
各种英语时态的用法和结构.急.
一般现在时如果谓语动词是be要根据主语是第几人称用is ,are ,am .如果谓语动词是及物动词或不及物动词要根据主语是第几人称如果是第三人称动词加-s例句i watch tv at 9pm everyday.she watches tv at 9pm everday .you watch tv at 9pm everday .
现在 过去 将来 过去将来
一般do/does did will do would do
进行is/am/are doingwas/were doingwill be doin...
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现在 过去 将来 过去将来
一般do/does did will do would do
进行is/am/are doingwas/were doingwill be doingwould be doing
完成have/has done had done will have done would have done
完成进行have/has been doing had been doingwill have been doing would have beendoing
结构如上
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1、一般过去式，用动词过去式加sth
2、一般现在式，要注意第三人称单，如果是，那就用单词的单三是。
3、一般将来时用sb will do sth.