一般過去時

(1)一般過去時表示過去某一時間所發(fā)生的動作或存在的狀態(tài)。

① 當(dāng)動詞為 be 動詞時，應(yīng)該用相應(yīng)的過去式：

am is----was;are----were

否定形式為：was not----wasn’t;were not----weren’t

疑問句是將 was, were 置于主語之前。

I was in Grade Three last term.

I wasn’t in Grade Two last term.

Which grade were you in?

② 當(dāng)動詞為實義動詞時，用動詞的過去式，過去式的變化有規(guī)則和不規(guī)則變化。規(guī)則變化如下：

動詞過去式的不規(guī)則變化需要逐個記憶。見初三教材后的不規(guī)則動詞變化形式表。

go----went;begin----began;sleep----slept;run----ran;

I heard the good news just now.

The twins didn’t go to school last week.

Did you see the film yesterday ?

(2)一般過去時的用法

① 表示過去某一時間或一段時間發(fā)生的動作或存在的狀態(tài)。常和表示過去的狀語連用：yesterday, last week, a minute ago, in 1998, just now, in those days 等。例如：

They had a baby last month.

My mother was ill yesterday.

He went out just now.

② 用于 since 引導(dǎo)的從句，主句的謂語動詞如果用現(xiàn)在完成時，since 引導(dǎo)的從句一般要用一般過去時。如：

He has worked in the factory since it opened in 1990.

You haven’t changed much since we last met.

注意：

a.)表示過去的時間狀語常見的有：yesterday, last night(week, year, month, Sunday), then, at that time, just now, a few days(weeks, months) ago.以及由 after, before, when, while 引導(dǎo)的的表示過去的時間狀語。

b.)一般過去時可以用來表示現(xiàn)在的時間， 這主要用于日常會話，使用的語氣較為婉轉(zhuǎn)客氣。如：

I wanted to ask if I could borrow your bike.

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