2023届高考英语二轮复习状语从句课件(共10张PPT)

(共10张PPT)
状语从句
考点1　时间状语从句
1.when、while、as的用法
(1)when表示“当……的时候”时可与延续性动词、短暂性动词连用,从句动作可在主句动作之
前、之后或同时发生。
When I lived there, I used to go to the seashore on Sundays.(持续性动作)
When she alighted from the train there was a nearly full moon.(短暂性动作)
(2)while表示“在……期间,当……的时候”。
从句动作必须是持续性的,主句动作和从句动作同时发生。
Please don't talk so loud while others are working.
考点清单
(3)as表示“随着,当……时”。主句动作和从句动作同时或几乎同时发生。
As time goes on, it's getting warmer and warmer.
The children sang songs as they went home.
●注意
如果主句表示的是短暂性动作,而从句用延续性动词的进行时态表示在一段时间内正在进行的动
作,此时when、while、as可互换使用。
When/While/As I was walking down the street, I came across an old friend of mine.
2.表示“一……就……”的词(组)
常见的有as soon as、once、immediately、directly、instantly、the moment、the minute、
the instant、no sooner...than...、hardly(scarcely/barely)...when...。
The moment I heard the voice, I knew my father was coming.
●注意
①no sooner...(过去完成时)than...(一般过去时)
hardly/scarcely/barely...(过去完成时)when...(一般过去时)
②no sooner和hardly/scarcely/barely位于句首时,主句倒装。
Hardly had I got home when it began to rain.
=I had hardly got home when it began to rain.
3.till和until
(1)肯定句:主句的谓语动词必须是延续性动词,主句、从句都为肯定式,意为“某动作一直延续到
某时间点才停止”。
He remained there until/till she arrived.
You may stay here until/till the rain stops.
(2)否定句:主句的谓语动词必须是非延续性动词,从句为肯定式,意为“某动作直到某时间才开始”。
He won't go to bed till/until she returns.
直到她回来他才去睡。
(3)till不可以置于句首,而until可以。
Until you told me, I had no idea of it.
(4)not...until... 直到……才……
1)强调句:It is/was+not until...+that+原句剩余成分(注意时态)。
It wasn't until we had stayed together for a couple of weeks that I found we had a lot in common.
2)倒装句:not until置于句首时,主句倒装,结构为“Not until...+助动词+主句主语+动词”。
Not until Tom finished his homework did he go to bed.
4.before的用法
(1)before表示“在……以前”。
(2)It will/won't be+一段时间+before... 还得过多久才/用不了多久就……。
It will be half a year before I come back.
(3)It was/wasn't+一段时间+before... 过了多久才/没过多久就……。
It wasn't a long time before we met again.
5.since的用法
(1)since后接一般过去时的从句时,主句用现在完成时或现在完成进行时。
Since she retired she's kept herself busy.
(2)“It is/has been+一段时间+since从句”这一句型中,其句意取决于从句的谓语动词是否是延续
性动词。
It is three years since he left.他离开三年了。
It has been three years since I've seen her. 我已经三年没见她了。
6.一些连词化的名词词组
Every/Each time I was in trouble, he would come to help me out.
每当我处于困境,他就会来帮助我。
Next time you come, remember to bring your son here.
下次你来的时候,记着把你儿子带来。
He scored the first time he touched the ball.
他第一次击球就得了分。
The last time she saw James, he was lying in bed.
上次她看见詹姆斯的时候,他正躺在床上。
考点2　条件状语从句
1.if如果
2.unless(=if...not)除非
3.so/as long as只要
4.on condition that条件是,只有
5.suppose/supposing (that)假如
6.provided/providing (that)如果
7.in case以防
●注意
条件状语从句中谓语动词的时态一般要用现在时或过去时代替一般将来时或过去将来时。
So long as you kept your promise, you would get what you wanted.
考点3　让步状语从句
1.although/though虽然,尽管
2.while虽然
While I am willing to help, I do not have much time available.
3.even though/if即便,即使
4.wh-ever/however(=no matter+wh-/how疑问词)无论
Whatever(=No matter what)you say, he won't believe you.
5.whether...or...无论……还是……
Whether it is fine or not, I shall go out for an outing tomorrow.
●注意
as或though引导让步状语从句时可以采用倒装结构。
Strange though it may seem, I like housework.
Happy as they were, there was something missing.
Try as he might, he couldn't open the door.
考点4　其他状语从句
1.地点状语从句
(1)where在……地方
(2)wherever无论哪里
2.原因状语从句
(1)because
(2)as由于
(3)now that/since既然,由于
Now that/Since everybody is here, let's begin our meeting.
(4)in that因为
We won't go there in that it's raining.
3.目的状语从句
(1)so that/in order that为了,以便
(2)for fear that唯恐
(3)lest以免
Be careful lest you fall from that tree.
4.结果状语从句
(1)so...that...如此……以至于……
He is so good a teacher that we all like him.他是那么好的老师,我们都喜欢他。
(2)such...that...如此……以至于……
He is such a good teacher that we all like him.他是那么好的老师,我们都喜欢他。
5.方式状语从句
(1)as if/though好像,仿佛
Look at the clouds! It looks as if/as though it is going to rain.看那些云!好像要下雨了。
(2)as正如
Do as I say!按我说的去做!