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英語語法入門之過去時態
英語時態很多同學會搞混，下面小編整理了英語語法入門之過去時態知識，希望對大家有幫助！
There are two tenses in English – past and present.
英語里有兩種時態—過去時和現在時。
The past tense in English is used:
英語里過去時用于：
to talk about the past
談論過去
to talk about hypotheses – things that are imagined rather than true.
談論假設
for politeness.
基于禮貌
There are four past tense forms in English:
We use these forms:
to talk about the past:
He worked at McDonald’s. He had worked there since July.
He was working at McDonald’s. He had been working since July.
to refer to the present or future in conditions:
He could get a new job if he really tried.
If Jack was playing they would probably win.
and hypotheses:
It might be dangerous. Suppose they got lost.
I would always help someone who really needed help.
and wishes:
I wish it wasn’t so cold.
In conditions, hypotheses and wishes, if we want to talk about the past, we always use the past perfect:
在條件狀語從句、虛擬語氣以及表祝愿時，我們在談論過去時，經常使用過去完成時。
I would have helped him if he had asked.
It was very dangerous, What if you had got lost?
I wish I hadn’t spent so much money last month.
We can use the past forms to talk about the present in a few polite expressions:
在一些禮貌的表達中，我們用過去式來談論現在的事情。
Excuse me, I was wondering if this was the train for York.
I just hoped you would be able to help me.
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