1．
【误】 We don't allow to smoke in the lecture hall.
【正】 We don't allow smoking in the lecture hall. 【正】 We don't allow people to smoke in the lecture hall. 【解析】 考查固定结构。allow doing sth.; allow sb. to do sth. 【误】 She was the first person thinking of the idea.
2．
【正】 She was the first person to think of the idea.
【解析】 当序数词或由序数词所修饰的名词带定语时， 此定
语通常由不定式来充当。 3．
【误】 The question being discussed at tomorrow's meeting is a
very important one.
【正】 The question to be discussed at tomorrow's meeting is a very
important one.
【解析】 being discussed表示动作正在进行，而根据at tomorrow's
meeting可判断动作发生在将来，故用to be discussed表示。 4．
【误】 This boy was seen come late this morning.
【正】 This boy was seen to come late this morning.
【解析】 see，watch等动词转换为被动结构时，其后不定式一般
需要带to。
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5．
I've been looking forward to hear from you.
【答案】 hear 改为hearing。
【解析】 短语look forward to中，to为介词，所以应用动名词作
宾语。 6．
He admitted to have stolen the car.
【答案】 to have改为having。
【解析】 admit 后面跟动词的ing形式作宾语。 This is a waste of time persuading such a person to join us.
7．
【答案】 This改为 It。
【解析】 作形式主语，代替动词的ing形式，只能用it。 The flowers need being watered.
8．
【答案】 being watered改为watering或者to be watered。 【解析】 need, want, require等动词的主语为物时，后面跟动名词
主动形式或接不定式的被动结构，表示“……需要被……”。 9．
现在分词的完成式通常不作定语或补语。
(1) 【误】 I could see the house having been beautifully decorated.
【正】 I could see the house beautifully decorated.
(2) 【误】 The book having been written long ago is hard for us to understand today.
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【正】 The book written long ago is hard for us to understand today.
10．作状语的分词，其逻辑主语必须同句中主语为同一人或同一事，现在分词与其逻辑主语有主动关系，而过去分词则与其逻辑主语有被动关系。
(1) 【误】 Having found the cause, the experiment continued.
【正】 Having found the cause, they continued the experiment.
(Having found＝After/When they had found)
(2) 【误】 Seeing from the top of the hill, the city looks more beautiful.
【正】 Seen from the top of the hill, the city looks more beautiful.
(Seen＝When the city is seen)
11．非谓语的否定式中，not必须放在非谓语的最前面。
(1) 【误】 Having not finished his homework, he didn't want to go to bed.
【正】 Not having finished his homework, he didn't want to go to
bed.
(2) 【误】 Mother warns us to not play in the street.
【正】 Mother warns us not to play in the street.
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1．
The book mainly deals with the trouble students might have
_____________ right from wrong.
A．distinguishing B．distinguished C．to distinguish D．to be distinguished
2. ________ of the truth of the reports, he told his colleagues about it.
A．Convinced C．To convince
B．Convincing D．Having convinced
3．
—Be careful! Don't forget you are on a ladder.
—But you are holding it for me, nothing ____________ . A．worry about
B．to worry about D．worrying about
C．is worried about
4． He looked at me, with an expression ________ that he felt even
more puzzled.
A．indicate
B．indicates
D．indicated
C．indicating
5．Your cousin is said ________ a new computer programme recently, but do you know when he will finish it?
A．to design B．to be designing
C．to have been designing D．to have designed
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