用英文解释过去完成时和过去式

Past Perfect Simple (过去完成时)
The past perfect simple expresses an action taking place before a certain time in the past.
Form of Past Perfect Simple:
/ Positive / Negative / Question
no differences / I had spoken./ I had not spoken./ Had I spoken?
For irregular verbs,use the past participle form .For regular verbs,just add ed.
Use of Past Perfect
■action taking place before a certain time in the past
(putting emphasis only on the fact,not the duration)
Example:Before I came here,I had spoken to Jack.
Past Progressive (Past Continuous) (过去式进行)
The past progressive puts emphasis on the course of an action in the past.
Use of Past Progressive
■puts emphasis on the course of an action in the past
Example:He was playing football.
■two actions happening at the same time (in the past)
Example:While she was preparing dinner,he was washing the dishes.
■action going on at a certain time in the past
Example:When I was having breakfast,the phone suddenly rang.
Simple Past (Past Simple) (过去式 )
The simple past expresses an action in the past taking place once,never,several times.It can also be used for actions taking place one after another or in the middle of another action.
Use of Simple Past
■action in the past taking place once,never or several times
Example:He visited his parents every weekend.
■actions in the past taking place one after the other
Example:He came in,took off his coat and sat down.
■action in the past taking place in the middle of another action
Example:When I was having breakfast,the phone suddenly rang.
■if sentences type II (If I talked,…)
Example:If I had a lot of money,I would share it with you.
以上,我将三种不同时态:过去完成时,过去式进行时和过去式 都用英文作了解释,并提供了用法,每一种用法下面还附了例句,我想,一看就会很清楚了~
说白了,过去完成时是不能单独用的,比如有两件事A和B,都发生在过去,但A发生在B以前,那麼A用过去完成式,而B则用过去式.
过去式就是单纯地指过去所发生的事.
而过去进行也是很少单独使用的,常和另一个句子使用,有两件事A和B,都发生在过去,但A和B同时发生,那麼其中A(或B) 用过去进行,而B(或A)则用过去式.
很简单吧~^^