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2021年大学英语六级听力考点句(6)
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.
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 all 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。
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