Question

英语语法题目 ...急~

[a] He (be) 1 ____________________ a newspaper reporter before he (become) 2 ____________________ a businessman.
[b] Class (begin, already) 3 ____________________ by the time I (get) 4____________________ there, so I (take, quietly)
5 ____________________ a seat in the back.
[c] Millions of years ago, dinosaurs (roam) 6 ____________________ the earth, but they (become) 7 ____________________ extinct by the time humankind first (appear) 8 ____________________.
[d] It is midnight. I (study) 9 ____________________ for five straight hours. No wonder I’m getting tired.
[e] George suddenly realised that the teacher was asking him a question. He couldn’t answer because he (daydream) 10 ____________________ for the last ten minutes.
(f)Interms of what is (understand)______about the activity described,you may want to write a proper essay for this course.
(g)the student(be)(make)_____the same mistake for the last few months,
(h)they are not coming to school, (be)____they?
(i)twenty-two percent of the participants of race (be)______females.
(j)ahmad drives to work every morning. However,yesterday he (take) ____ a bus to work.
(k)ramachandran,as well as his two friends,(be)(miss)________for the last 2 days in the jungle.
(l)by the time my father arrives to pick me up tomorrow,i (pack) ______my personal belongings.
(m)Every boy and girl in the school (be) (ask) _______to complete the form two months ago.
(n)reading novel and poetry(be)_____different from reading non-fiction or factual information.

Answer 1

1.was became
2.had already begun got quietly took
3.roamed had become appeared
4.have studied
5.was daydreaming
6.understood
7.was made
8.are
9.were(are)
10.took
11.had been missed
12.will have packed
13.was asked
14.is

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Answer 2

1，was
2，became
3，had already begun
4，got
5，took quietly
6，roamed
7，had become
8，appeared
9，have studied
10 was daydreaming
11，understood
12，has made
13，are
14，are
15，took
16，was missing
17，will have packed
18，was asked
19，are

注解：
12，如果句子的时间状语是in the past/last+一段时间，那么句子的谓语动词必须要用现在完成时态
16，ramachandran 是主语，as well as his two friends不做主语成分，所以谓语用was

18，主语由each, every,等词修饰时，谓语动词要用单数。

固定用法

By the time +一般过去时，则主句用过去完成时
By the time +一般现在时，则主句用将来完成时