as soon as指未發(fā)生的動(dòng)作，主句用一般將來時(shí)，從句用一般現(xiàn)在時(shí)替代一般將來時(shí)。指隨后發(fā)生的2個(gè)短動(dòng)作，主從關(guān)系句都用一般過去時(shí)。

as soon as的用法

1、指未發(fā)生的動(dòng)作，規(guī)律是主句一般將來時(shí)，從句用一般現(xiàn)在時(shí)代替一般將來時(shí)，如I will tell him the news as soon as he comes back；

2、指緊接著發(fā)生的兩個(gè)短動(dòng)作，主從句都用一般過去時(shí)，如He took out his English books as soon as he sat down。

一般來說as soon as前后的動(dòng)詞用主將從現(xiàn)，主句用一般將來時(shí)，從句用一般現(xiàn)在時(shí)。

例句：

1、As soon as we found this out,we closed the ward.

我們一發(fā)現(xiàn)此事就關(guān)閉了病房。

2、As soon as I had made the final decision,I felt a lot more relaxed.

我一作出最后的決定就感到輕松多了。

3、He got married as soon as he graduated.

他一畢業(yè)就結(jié)婚了。

as soon as 后面用什么時(shí)態(tài)

1.as soon as 可以表將來的事：這時(shí)主句用一般將來時(shí)，從句用一般現(xiàn)在。(主將從現(xiàn))

例：我一見到他就會(huì)告訴他這個(gè)消息。

As soon as I see him I will tell him the news.

I will tell him the news as soon as I see him.(位于主句前后均可)

我一到北京就會(huì)給你打電話。

I will call you as soon as I arrive Beijing.

As soon as I arrive Beijing I will call you.

我一看到他就會(huì)告訴。

I will tell him as soon as I see him.

As soon as I see him I will tell him.

當(dāng)主句用一般將來時(shí)時(shí)，可以用一般現(xiàn)在時(shí)代替一般將來時(shí)

2.as soon as引導(dǎo)時(shí)間狀語從句當(dāng)主句用一般過去時(shí)時(shí)，從句中用一般過去時(shí)或過去完成時(shí)。

例：晚會(huì)剛一開始他就離開了。

As soon as the party began/had begun he left.

He left as soon as the party began/had begun.(位于主句前后均可)

他一聽到那個(gè)消息就暈倒了。

As soon as he heard/had heard the news, he fainted.

He fainted as soon as he heard/had heard the news.