非谓语动词The boy a blue jacket is John's brother. A.wear B.wore C.wearing D.wears

非谓语动词The boy a blue jacket is John's brother. A.wear B.wore C.wearing D.wears

31. The boy (wearing) a blue jacket is John's brother.

选择 C.
现在分词作定语等于定语从句who is wearing a blue jacket的简化

32. (Spoken) English is quite different from written English.

选择A
(Spoken) English = English (which is spoken) (被口头说的英语，下文还有written English【书面英语】参照)

33. He is from an (English-speaking) country.

选择：B.
English-speaking = English which people speak (人们说英语)

34. (Having finished) their lessons, they went to the cinema.

选择：D.
(Having finished) their lessons = (after/when he had finished) their lessons（指先结束课后，后看电影）
(finishing) their lesson = (as he finished) their lessons （指一边结束课程一边去看电影）

35. (Knowing) he had won the first prize, he felt very happy.

选择：C.
(Knowing) he had won the first prize = (when/because he knew) he had won the first prize（他知道了赢得了头等奖的同时感到高兴）

36. As soon as she entered the room, the girl caught sight of the flowers (bought) by her mother.

选择：D.
flowers (bought) by her mother = flowers (which ws bought) by her mother （被母亲买回来的花）
flowers (being bought) = flowers (which were buying) by her mother （正被母亲买的花）

37. The old scientist has been invited to a party (to be held) next Monday evening.

选择：D
a party (to be held) next Monday evening = a party (which will be held) next Monday evening. （下周一将要举办的聚会）
a party (being held) next Monday evening = a party (which is been holdings he knew ) next Monday evening. （下周一正在举办的聚会——“下周一”和“正在”矛盾）

38. The building (being built) now will be used as our reading room.

选择：C.
The building (being built) now = The building (which is been building) now (此刻正在建造的大楼——进行时态的被动语态)

39. I advised (him to start) at once.

选择：B. （him 是宾语，不定式是宾补，表示advise以后进行的行为）
advise sb. to do sth. 表示“建议某人去做某事”

40.You shouldn't allow (students to play) games near the classroom, for it's too noisy.

选择：C.
allow students to play games 表示“允许学生玩耍”，而allow playing games表示“允许任何人玩耍”。另外，allow 后不能用现在分词作宾补，即allow students to playing games。

31.C穿蓝色夹克的男孩是JOHN的哥哥。因为is是整个句子中的谓语动词，而一个句子只能有一个谓语动词，所以前面的wear就不能用实义动词，所以用分词wearing。
32.D那个空如果我没猜错的话应该是是在English的后面吧，如果我猜对了，那么那句话是说讲英语和写英语是不同的，整个English speaking作句子的主语，同理，is 是谓语动词，所以speaking要用分词，后面的written也是分词形式。
33.B他来自一个说英语的国家。English-speaking作形容词用，你就把它当成固定词组吧。
34.B这个我没有十足的确定，但是分析来看，中间用逗号连接所以是一句话，后半句的went to是谓语动词，那么前面就不能用do,have done的形式，所以D排除，后面是一般过去时，又没有连词，所以前面应该用过去完成时。
35.C这个应该是主动的形式，BD排除，同样一个简单句只能有一个谓语动词，所以用分词
36.D花是被她妈妈买，所以肯定是被动形式。
37.C这个我不十分确定，但肯定是被动，又因为是下个星期一，所以会有表将来的意思。
38.C现在时，正在建的楼，而且被动，句子里已经有will be这个谓语动词了，所以is不能用
39.B advise sb to do sth是固定结构
40.C allow sb to do sth allow doing sth是固定结构。