英语
1.People have come to know that their health must ( ). A.pay more attention B.pay more attention to C.be paid more attention D.be paid more attention to 我的答案：A正确答案：D不知为什么？请翻译一下中文。 2.The room ( )yesterday,for it is very tidy now. A.must be cleaned B.mmust be cleaned C.must clean D.must have been cleaned 我的答案：A正确答案：D不知为什么？请翻译一下中文。
1。People have come to know that their health must ( )。 A。pay more attention B。pay more attention to C。be paid more attention D。
be paid more attention to 翻译 人们开始认识到他们的健康必须被更多的关注。。。 解释 由于health只能被关注的所以是被动 paid attention to 是关注的意思 是一个固定的结构to不能随意舍去 2。
The room ( )yesterday,for it is very tidy now。 A。must be cleaned B。mmust be cleaned C。must clean D。
must have been cleaned 翻译：这个房间一定已经在昨天被打扫过了 因为它现在很干净 解释：你选的是A 所以应该已经知道是被动的了 而D和A的区别就在于D是现在完成时 通过前后句联系可知clean动作在过去发生之后其作用的结果一直延续到now 所以只有现在完成能表达出延续的意思A只能说明房间被打扫过了而对现在无影响。
答：must表示主观，have to表示客观。 We must help each other. My sister is ill, my mother has t...详情>>
