一般過去時

一般過去時表示過去某一時候或某一段時間所發生了的事情或存在的狀態。常與過去時間連用，如：yesterday, this morning, just now, a moment ago, in May, last night / year / week, once upon a time, the other day, before..., when—clause, in the past
What did you do yesterday?
昨天你干了什么?
I met Lin Tao this morning.
今天上午我會到了林濤。
I was there a moment ago.
剛才我在那兒。

一般過去時的應用

1. 表示過去某時所發生的動作或存在的狀態
Liu Ying was in America last year.
劉英去年在美國。
Jim rang you just now.
吉姆剛才給你打了電話。
2. 表示過去經常或反復發生的動作。常接時間副詞often, usually, always, sometimes, every day / week, etc.
We often went out for a walk after supper.
我們過去常在晚飯后散步。
We usually played together.
我們通常一起玩。
一般過去時對謂語動詞的要求：一般過去時的謂語動詞要用動詞的過去式。動詞過去式的構成分規則變化和不規則變化兩種形式，不規則變化通常需要逐個記憶，規則變化則遵循以下原則：
1. 一般在動詞后加-ed
play—played, offer—offered, weigh—weighed, destroy—destroyed,
2. 在以字母e結尾的動詞后，只加-d
like—liked, provide—provided, hate—hated, date—dated，
3. 在以“輔音字母+y”結尾的動詞后，則改y為i，再加-ed
supply—supplied, fly—flied, study—studied.
4. 在以單短元音的重讀閉音節結尾且，末尾只有一個輔音字母的動詞后，雙寫最后一個輔音字母，再加-ed
plan—planned, refer—referred, regret—regretted, ban—banned.
特別說明：有些動詞的過去時，如：expect, hope, intend, plan, wanted 等一般過去時，后接不定式的完成時；或它們的過去完成時接不定式的一般式，都可表示過去未曾實現的意圖、打算或希望。
I hoped to have been invited to his wedding party. —I had hoped to be invited to his wedding ceremony.
我本希望他來邀請我參加他的婚禮。
I intended to have joined their games. —I had intended to join their games.
我本打算參加他們的比賽。

句式變化技巧

★肯定句變為否定句

【技巧1】
當句中含有情態動詞或助動詞could, would, should等時，可直接在其后面加not構成否定句。
例如：
I could get you a concert ticket. →I could not / couldn't get you a concert ticket.
我給你弄不到那張音樂會門票。
【技巧2】
當句中含有系動詞was, were 時，可直接在其后加not構成否定句。
例如：
I was on the Internet when you called me. →I was not / wasn't on the Internet when you called me.
你找我的時候，我沒有上網。
【技巧3】當句中謂語是除情態動詞、助動詞、系動詞was,were以外的動詞時，在該動詞之前加did not / didn't，動詞還原，構成否定句。
例如：
The famous singer sang some Chinese songs. →The famous singer did not / didn't sing any Chinese songs.
哪位知名歌手沒唱任何中文歌。

★肯定句變為一般疑問句

【技巧1】
移動詞語的位置。將was, were, could, would, should等移到句首。
例如：
He could pack his things himself. → Could he pack his things himself?
他自己能收拾好這些嗎？
【技巧2】
添加助動詞did。謂語是除情態動詞、助動詞、系動詞was, were以外的動詞時，在主語之前加did，動詞還原。
例如：
Mr Li looked very old. → Did Mr Li look very old?
李先生看起來很老嗎？

★陳述句變為特殊疑問句

【技巧1】
確定疑問詞：人who / whom，物what，地點where，時間when / what time，原因why，頻率how often，長度how long，距離how far等等。
例如：
They gave the concert last night. → When did they give the concert?
他們什么時候開音樂會？
【技巧2】
辨認結構形式：疑問詞+情態動詞/助動詞/ was / were / did +主語+...?
例如：
The accident happened near the station. → Where did the accident happen？
那起事故在哪兒發生的？