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状语从句知识点小结,It be…since /before /when
日子如同白驹过隙，不经意间，我们的工作又将告一段落了，我们从中吸收了不少新的知识，将过去的时间汇集成一份优秀小结吧。那么要如何写呢？以下是小编帮大家整理的状语从句知识点小结,It be…since /before /when，仅供参考，欢迎大家阅读。
1.It be +时间段+since表示自从以来有多久了，但若从句谓语是延续性动词时，则意为(多久) 不做了。
2.It be+时间段+before表示过之后才，若be是否定式，则表示没过就。
3.It be +时间点+before表示在之前，时间是。
4.It be +时间点+when表示当时，时间是。
It is three years since I joined the Party.我入党有三年了。
It is three years since he lived here.他不住这里有三年了。
It will be years before we meet again.要过几年之后我们才能重相聚。
It was not long before he came back.没过多久他就回来了。
It was evening before they got here.他们到达这里之前就已天夜了。
It was five oclock when he got home.他回到家时已是五点了。(比较强调结构：It was at five oclock that he got home.)
状语从句知识点习题及答案
1.It worried her a bit _________ her hair was turning grey.
A.while B.that C.if D.for
2._________ she is a rich woman is known to all in the city.
A.X B.That C.Who D.Because
3 _________ the 2008 Olympic Games will be held in Beijing is not known yet.
A.Whenever B.If C.Whether D.That
4.The reason why I burst into tears is _________ I dont want to part with my mother.
A.that B.which C.X D.because
5.The difficulty lies _________ we have no money.
A.that B.in that C.in the fact D.in the fact that
6.They want to know _________ do to help us.
A.what can they B.how can they
C.how they can D.what they can
7._________ comes back first is supposed to win the prize.
A.Those who B.Anyone C.Whoever D.The one
8.The old gentleman never fails to help _________ is in need of his help.
A.whom B.who C.whoever D.whomever
9.I dont remember Mr.Li bought for his wife.
A.what B.when C.how D.where
10.Smith came here to look for someone, but I didnt know _________ was the one he was looking for.
A.whatever B.whomever C.who D.whom
11._________ puzzled the police especially was how the murderer died.
A.The thing B.That C.What D.Which
12.He seems different from _________ he used to be.
A.that B.which C.what D.who
13.You can depend on _________ promise he makes.
A.anything that B.which C.whatever D.whose
14._________ is worth doing well.
A.Whatever is worth doing at all B.That is worth doing at all
C.What is worth doing it at all D.Whatever is worth doing it at all
15.A mans worth lies not so much in _________ he has as in _________ he is .
A.that; what B.what; what C.that; that; D.what; that
16._________ you are the first one here.
A.It seems that as if B.It seemed that
C.It seems as if D.it seemed as though
17.It is not _________ I wont do it , _________ I cant do it.
A.what;but that B.that;but that
C.because; but what D.because; but because
18.Give it to _________ you think can do the work well.
A.who B.whoever C.whomever D.whatever
19.Is the river _________ through that town very large?
A.that flows B.flows C.that flowing D.which flowing
20.Thats the Science Museum _________ we visited last year.
A.where B.whom C.to which D.X
21.There is no child _________ love _________ parents.
A.who do not; their B.who does not ; his
C.who do not;his D.who does not;their
22.Watch the girl and her dog _________ are crossing the bridge.
A.which B.who C.they D.that
23.Who _________ knows him would believe him?
A.whom B.that C.which D.who
24.His parents wouldnt let him marry anyone _________ family was poor.
A.of whom B.whom C.of whose D.whose
25.The building _________ windows are bright at night is our school library.
A.that B.which C.whose D.of which
26.There is a mountain _________ the top is always covered with snow.
A.of that B.of which C.its D.that
27.I will hire the man _________ they say is a good English speaker.
A.who B.that C.which D.whom
28.You may stay _________ you like.
A.long B.then C.at which D.where
29.Is this museum _________ some German friends visited the day before yesterday?
A.which B.that C.where D.the one
30.Keep away from such things will do you harm.
A.as B.that C.to which D.which
31.In the dark street, there wasnt a single person _________ she could turn for help.
A.that B.who C.from whom D.to whom
32.This is the very boy _________ parents were killed in the war.
A.who B.that C.whose D.whom
33.He is my son, _________ a better son doesnt exist.
A.but B.than who C.against whom D.than whom
34._________ the professor had left, everyone looked relaxed.
A.While B.After C.Unless D.For
35.Her mother has been ill _________ she came to Beijing last year.
A.since B.for C.as D.when
参考答案：
1.B 2.B 3.C 4.A 5.D 6.D 7.C 8.C 9.A 10.C
11.C 12.C 13.C 14.A 15.B 16.C 17.D 18.B 19.A 20.D
21.B 22.D 23.B 24.D 24.C 26.B 27.A 28.D 29.D 30.A
31.D 32.C 33.D 34.B 35.A
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