问题补充:
It is necessary something to protect our environment.
A. do
B. to do
C. does
D. doing
答案:
A. do
(答案→)B. to do
C. does
D. doing
解析:此题重点考查固定句型,It is+形容词 for sb. to do sth,“表示做某事对某人来说很adj”在这个结构中,it是形式主语,真正主语是后面的不定式短语,因此排除A、C、D故选B
时间:2022-04-16 12:17:11
It is necessary something to protect our environment.
A. do
B. to do
C. does
D. doing
A. do
(答案→)B. to do
C. does
D. doing
解析:此题重点考查固定句型,It is+形容词 for sb. to do sth,“表示做某事对某人来说很adj”在这个结构中,it是形式主语,真正主语是后面的不定式短语,因此排除A、C、D故选B