英语!时态和语态!

题目

英语!时态和语态!
1.He will have learned English for eight years by the time he ( )from the university next year.
A.will graduate B.will have graduated C.graduates D.is to graduate
2.Why don't you put the meat in the fridge It will ( )fresh for several days.
A.be stayed B.stay C.be staying D.have stayed
3.The old couple have been married for 40 years ,and neve once ( ) with each other.
A.they had quarreled B.they have quarreled C.have they quarreled
D.had they quarreled

答案

1.C
主句用了将来完成时,从句则用一般现在时来表示将来时,而完成的概念则由by the time来体现.
2.B
用一般将来时即可,因为句意既没有强调完成也没有强调进行.
3.C
由and和句意可以推知后句中也应该采用现在完成时：have + 过去分词.
而且否定词never提前,所以句子必须采用部分倒装,即把have提前.