新課堂同步學習與探究九年級英語上學期人教版
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— Excuse me, sir.Smoking
B
in the hospital.
— Oh, I'm really sorry.
A.doesn't allow
B.isn't allowed
C.aren't allowed
D.allowed
答案：B
解析：smoking和allow是被動關系，用被動語態，動名詞作主語，be動詞用is，選B。
2.— Have you ever heard that China is building a nationwide 5G network?
— Yes. 5G will allow us ______ movies faster than ever.
A.download
B.downloads
C.to download
D.downloading
答案：C
解析：“allow sb. to do sth.”允許某人做某事，用不定式to download，選C。
3.Class is over. The teacher allows ______ football.
A.to play
B.play
C.playing
D.played
答案：C
解析：“allow doing sth.”允許做某事，用動名詞playing，選C。
1.Schools don't allow students
to wear
(wear) their own clothes.
答案：to wear
解析：“allow sb. to do sth.”的否定形式，用不定式to wear。
2.Students shouldn't
be allowed
(allow) to go out on school nights.
答案：be allowed
解析：students和allow是被動關系，shouldn't后接be allowed。
3.Magazines can't
be taken
(take) out of the library.
答案：be taken
解析：magazines和take是被動關系，can't后接be taken。
4.Should the rules ______
be changed
?
答案：be changed
解析：rules和change是被動關系，should后接be changed。
5.When can the bridge ______
be completed
?
答案：be completed
解析：bridge和complete是被動關系，can后接be completed。
