模
块
语
法
专
练
whether/if
及疑问词引导的宾语从句
1.whether/if
引导的宾语从句。
( 1 )whether/if
引导宾语从句时
,
意为
“
是否
”,
表示不确定的概念
,
常位于
ask,see,say,know,find out
等词或短语后面。一般情况下
,
两者可互换
,
在口语中多用
if
。例如
:
He asked if/whether they needed some help.
他问他们是否需要帮助。
( 2 )whether
和
if
的区别。
①
在动词不定式之前只能用
whether
。例如
:
I can
’
t decide whether to stay.
我不能决定是否留下。
②
在固定结构
“whether...or not”
中
,
只能用
whether
。例如
:
I want to know whether it
’
s good news or not.
我想知道它是否是个好消息。
③
在介词后只能用
whether
。例如
:
His father is worried about whether he may lose his job.
他的父亲担心他是否会失去工作。
2.
疑问词引导的宾语从句。
( 1 )
由特殊疑问句充当宾语从句时
,
该从句由特殊疑问词引导
,
此从句要用陈述句的语序。例如
:
I don
’
t know when the plane flies.
我不知道飞机什么时候起飞。
( 2 )
当宾语从句由连接副词或代词
when,where,who,why,which,what,whose
等引导时
,
有时可以改为由
“
疑问词
+
动词不定式
”
构成的不定式短语
,
使宾语从句转化为简单句。但前提是主句的主语与从句的主语一致或主句的宾语是从句的主语。例如
:
Can you tell me how I can get to the bus stop?
→Can you tell me how to get to the bus stop?
你能告诉我怎样去公交车站吗
?
Ⅰ
.
单项填空
(
C
)1.—I wonder
.
—Yes,of course.
A.where we can buy the parts
B.how often you hear form your sister
C.if I may have a word with you
D.why he arrived late yesterday
(
A
)2.—What did he ask just now?
—He wondered
.
A.if they would meet at the school gate
B.when would they start
C.that they would take some food
D.how they will get there
(
D
)3.I wonder
the idea to Daming.He still looks angry.
A.if have you
mentioned
B.what
have you mentioned
C.what you have
mentioned
D.if
you have mentioned
(
B
)4.—Do you know
we will arrive at your home town?
—This afternoon.
A.why B.when
C.if D.where
(
C
)5.My grandmother always asks me
.
A.why can she use the iPad
B.how can she use the iPad
C.how she can use the iPad
D.when can she use the iPad
Ⅱ
.
用适当的引导词填空
1.—Could you tell me
how
people celebrate the Dragon Boat Festival in China?
—Sure.People usually watch the dragon boat races and eat
zongzi
.
2.—I
’
m waiting for the mail.Do you know
when
it will arrive?
—Usually it comes by 4:00 pm.
3.—Excuse me.I wonder
if/whether
there is a bus here to go to Downing Street.
—Yes.Bus No.223.
4.—Could you tell me
what
he said at the meeting?
—Sorry,I didn
’
t go to the meeting.
Ⅲ
.
将下列句子改为含有宾语从句的复合句
,
每空一词
1.When did the train leave?I wanted to know.
I wanted to know
when
the train
left
.
2.Are there many people at the party?I didn
’
t know.
I didn
’
t know
if/whether
there
were
many people at the party.
3.Does it cost much money to fly to Beijing?Could you tell me?
Could you tell me
if/whether
it
costs
much money to fly to Beijing?
4.Who invented TV set?I don
’
t know.
I don
’
t know
who
invented
TV set.
5.Does the girl need any help?He asked me.
He asked me
if/whether
the girl
needed
some help.
微信/支付宝扫码支付