非谓语动词3.At the beginning of class,the noise of desks ______co

非谓语动词
3.At the beginning of class,the noise of desks ______could be heard outside the classroom.
A.opened and closed B.to be opened and closed
C.being opened and closed D.to open and close
还是啥时候用分词和不定式搞不懂
7.The children talked so loudly at dinner table that I had to struggle________.
A.to be heard B.to have heard C.hearing D.being heard
为啥不用B
12.The crowd cheered wildly at the sight of Liu Xiang,who was reported_______the world record in the 110-meter hurdle race.
A.breaking B.having broken C.to have broken D.to break
不定式不是表目的表将来么.C不是将要打破么?请展开讲下,不要告诉我是固定搭配
15.---The last one _______pays the meal.---Agreed!
A.arrived B.arrives C.to arrive D.arriving
18.The flowers his friend gave him will die unless ________every day.
A.watered B.watering C.water D.to water
为什么不用BD?不是water the flowers,应该用主动啊…
20.________and happy,Tony stood up and accepted the prize.
A.Surprising B.Surprised C.Being surprised D.To be surprised
为什么不用CD…
23.---There is a story here in the paper about a 110-year-old man.
---My goodness!I can’t imagine________that old.
A.to be B.to have been C.being D.having been
Imagine doing…然后已经完成,为啥不选D.having done到底表示什么时态啊啊啊啊
25.No matter how frequently________,the works of Beethoven still attract people all over the world.
A.performed B.performing C.to be performed D.being performed
为什么不用CD…

3 C being opened and closed是正在被开或关的意思
不定式是将要的意思,先让以后发生的响声是不能被听到的
7 D同理,孩子们大声谈论时我正挣扎着不要听到,这两个动作时同时发生的,B是有先后顺序的
12 B还是同理,被报道的时候是刚刚打破,其实也是他打破的进行时,是怎样打破的 是已经发生了,不定式有的时候是表示目的,但是也有表示没发生的
15 C 不定式坐后置定语,表示最后一个到的人付钱,但是人还没有来完,表示还没发生的
18A 花是被浇水的,花不能自己浇水,这些花（他的朋友送他的）将要死了除非花每天被浇水.
20 B surprised这里表示状语,形容词,全句应该是Feeling surprised and happy,Tony stood up and accepted the prize.他自己感到惊喜和高兴,是主语自己发生的感觉,动作.
23 C.D这里不适合用完成时态,完成时态用于在过去发生,并对现在造成一定影响或者动作
25 A 不管被表演多少遍,贝多芬的作品依然能吸引全世界的听众.是已经表演了很多次了,C的话是将被表演,意思是还没表演.D的话是正在被表演,是说话时正在进行的动作,可能只有一次,所以也不对.
be done,have done ,having done和done之间的去别
be done是被动语态,在句子中做谓语
而done是v.过去分词的一般式,在句子中作非谓语（且做非谓语时分词中的动作与被修饰词或主语为被动关系,即主语或被修饰词是此动作的承受者）
have done是现在完成时,在句子中做谓语
having done是v.现在分词的完成式,在句子中做非谓语,且分词中的动作早于谓语动作（且做非谓语时分词中的动作与被修饰词或主语为主动关系,即主语或被修饰词是此动作的发出者）
四种情况分别对应的例句：
1.He is killed by her.
2.Driven by enmity,he kills her.
3.I have learned English for 7 years.
4.Having waited for an hour,I found that I don't have money.
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