always sometimes,后面动词用什么形式过去时?经形势?动词怎么变化,加ing?

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always sometimes,后面动词用什么形式过去时?经形势?动词怎么变化,加ing?
always sometimes,后面动词用什么形式
过去时?经形势?动词怎么变化,加ing?

always sometimes,后面动词用什么形式过去时?经形势?动词怎么变化,加ing?
动词要加“s”.
顺便给你讲一下一般现在时的用法
1) 经常性或习惯性的动作,常与表示频腮度的时间状语连用.
时间状语：every…,sometimes,at…,on Sunday
I leave home for school at 7 every morning.
2) 客观真理,客观存在,科学事实.
The earth moves around the sun.
Shanghai lies in the east of China.
3) 表示格言或警句中.
Pride goes before a fall.骄者必败.
注意：此用法如果出现在宾语从句中,即使主句是过去时,从句谓语也要用一般现在时.
例：Columbus proved that the earth is round..
4) 现在时刻的状态、能力、性格、个性.
I don't want so much.
Ann Wang writes good English but does not speak well.
比较：Now I put the sugar in the cup.
I am doing my homework now.
第一句用一般现在时,用于操作演示或指导说明的示范性动作,表示言行的瞬间动作.再如：Now watch me,I switch on the current and stand back.第二句中的now是进行时的标志,表示正在进行的动作的客观状况,所以后句用一般现在时.

可能是原形吧!

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