英语六级经典必背500句(21)

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2015-8-12 09:29

英语六级经典必背500句(21)

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21.You see,I still have this pain in my back;this medicine the doctor gave me was supposed to make me feel better by now.

【六级词汇讲解】
被动语态表示主动含义的用法在英语里很常见,但却与我们中国人的思维习惯相去甚远,考生需多加练习。分号后句子的意思是“医生给我开的药现在应该可以使我感觉好些了(意为说话人的症状现在未见好转)“。

【英语六级考点归纳】
be supposed to的用法如下:

当be supposed to的主语是sb.时,意为“应该;被期望“,可以用来表示劝告、建议、义务、责任等,相当于情态动词should。如:
Teachers are supposed to treat ail students alike。
老师应该对所有学生一视同仁。

当be supposed to的主语是sth.时,意为“本应,本该“,用于表示“某事本应该发生而没有发生“。如:
The train was supposed to arrive an hour ago.
火车本应在一小时之前到达。

当be supposed to后接“have+过去分词“时,表示“本应该做某事而没做,,。如:
You are supposed to have handed in your homework by now.
到现在你应该已经把作业交上来了。

be supposed to的否定结构为be not supposed to,常用于口语中,意为“不被许可;不应当“。如:
She was not supposed to be angry about that.
她本不该为那件事而生气的。