I.要點
1、it的用法
(1)用作人稱代詞,代替前文提到的無生命的事物,動植物、嬰兒及指示代詞this, that,如,
I have a new pen. It is beautiful.
The Browns have a new baby. It's cute.
(2)用來表示時間、天氣、距離等,如,It's twelve o'clock now.
It's fine today.
(3)用作引導(dǎo)詞,代替由不定式,ing形式或從句表示的真正的主語或賓語,如,
It's no good telling him that.
It's necessary for you to do so.
(4)用在強調(diào)結(jié)構(gòu)中,構(gòu)成強調(diào)句式:It is/was +被強調(diào)部分+that/who/whom +句子其余部分,可強調(diào)除謂語以外的句子其他成分,如,
It was this morning that I saw him in the street.
It was I who saw him in the street this morning.
It was in the street that I saw him this morning.
It was him whom I saw in the street this morning.
2、there be句型
英語表示某時某處或某物時,常用there be句型,這是一種倒裝結(jié)構(gòu),如,
There are a lot of students playing on the ground.
There is going to be a test this afternoon.
當主語有兩個或兩個以上時,動詞be常和最近的那個主語取得一致,如,
There is a pen and three pencils in the pencil-box.
There isn't a desk, a bench and three chairs in the room.
There are lots of people like it, aren't there?
there be句型,謂語動詞除be之外,還可用其他表示存在,位置移動等意義的不及物動詞或詞組,如exist, stand, lie, enter, come, happen to be, appear to be等,如,
There stands a house at the foot of the hill.
there be句型表示"存在"而have表"有"、"擁有",所以there be中 be不能換成have,但當have表示事物的特征時,可用"主語+have"結(jié)構(gòu)替換there be 句型,如:
There are five doors in the house.
The house has five doors.
there be 的其它句型:
1、There must be a meeting in the office.
2、There have been great changes since 1979.
3、There being no bus, we had to walk home.
I. 例題
例1 ____ that he went to sleep.
A It was until midnight B That was until midnight
C It was not until midnight D That was not until midnight
解析:該題答案為C。強調(diào)until結(jié)構(gòu)時,要將否定詞not移到until前。又如:He didn't leave until twelve 改為It was not until twelve that he left.
例2 There are a lot of students ____ in the class room.
A talk B talking C talked D to talk
解析:該題正確答案為B。 There be句型為倒裝句,可換為A lot of students are talking in the class room. 又如:There is a lot of noise heard out in the street.