lots of songs should be allowed_____ at school

来源：百度知道 编辑：UC知道 时间：2024/07/06 15:22:46
横线上应该添什么？ Asing B to sing C singing D t be sung
不好意思 D 答案 是 to be sung

选 D
sb allow to do sth
sb be allowed to do sth
sth be allowed to be done

主语是song，歌是被唱的，要用 to be sung

如果主语是人
lots of students should be allowed to sing
就是to sing

主动和被动的关系
抓祝 “allow to +动词” 就行了 动词可是主动可以被动 看主语

别被 should be 迷惑了

答案:c
用法：allow [E`lau]vt./ vi.允许，准许
allow for sth. 允许某事
allow doing sth. 允许做某事
They don't allow smoking here.=They don't allow others to smoke here
allow sb. to do sth. 允许某人做某事
should be allow doing sth.
(注意被动：sb. be allowed to do sth.)

c should be allow doing sth 应该被允许怎么怎么样

b/should be allowed to do sth.应该被允许做某事

D to be sung