31.The boy (wearing) a blue jacket is John's brother.
選擇 C.
現(xiàn)在分詞作定語等于定語從句who is wearing a blue jacket的簡化
32.(Spoken) English is quite different from written English.
選擇A
(Spoken) English = English (which is spoken) (被口頭說的英語,下文還有written English【書面英語】參照)
33.He is from an (English-speaking) country.
選擇：B.
English-speaking = English which people speak (人們說英語)
34.(Having finished) their lessons,they went to the cinema.
選擇：D.
(Having finished) their lessons = (after/when he had finished) their lessons（指先結(jié)束課后,后看電影）
(finishing) their lesson = (as he finished) their lessons （指一邊結(jié)束課程一邊去看電影）
35.(Knowing) he had won the first prize,he felt very happy.
選擇：C.
(Knowing) he had won the first prize = (when/because he knew) he had won the first prize（他知道了贏得了頭等獎(jiǎng)的同時(shí)感到高興）
36.As soon as she entered the room,the girl caught sight of the flowers (bought) by her mother.
選擇：D.
flowers (bought) by her mother = flowers (which ws bought) by her mother （被母親買回來的花）
flowers (being bought) = flowers (which were buying) by her mother （正被母親買的花）
37.The old scientist has been invited to a party (to be held) next Monday evening.
選擇：D
a party (to be held) next Monday evening = a party (which will be held) next Monday evening.（下周一將要舉辦的聚會(huì)）
a party (being held) next Monday evening = a party (which is been holdings he knew ) next Monday evening.（下周一正在舉辦的聚會(huì)——“下周一”和“正在”矛盾）
38.The building (being built) now will be used as our reading room.
選擇：C.
The building (being built) now = The building (which is been building) now (此刻正在建造的大樓——進(jìn)行時(shí)態(tài)的被動(dòng)語態(tài))
39.I advised (him to start) at once.
選擇：B.（him 是賓語,不定式是賓補(bǔ),表示advise以后進(jìn)行的行為）
advise sb.to do sth.表示“建議某人去做某事”
40.You shouldn't allow (students to play) games near the classroom,for it's too noisy.
選擇：C.
allow students to play games 表示“允許學(xué)生玩?！?而allow playing games表示“允許任何人玩?！?另外,allow 后不能用現(xiàn)在分詞作賓補(bǔ),即allow students to playing games.