be supposed to用法大揭密
be supposed to中的to是动词不定式符号,不是介词,因此其后要跟动词原形。请仔细观察下面的例句,然后补全结论部分所缺的内容。
【例句】
1. She is late for class again and she is supposed to say sorry to the teacher.
= She is late for class again and she should say sorry to the teacher.
她上课又迟到了,她应该向老师道歉。
2. You are not supposed to do that.
= You shouldn’t do that. 你不应当那么做。
3. The meeting was supposed to take place on Tuesday, but we’ve put it off.
本应该在星期二开会,但我们推迟了。
4. My brother is supposed to be very clever.
我弟弟被认为是非常聪明的。
【结论】
A. be supposed to意为“应该”,此时它可用来
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示劝告、建议、义务、责任等,可以和_____ 替换。(例句1)
B. be supposed to 的否定结构为_____, 它常用于口语中,意为“不应当”。(例句2)
C. was / were supposed to意为“_____”,用于把本应该发生的事与实际发生的事进行对照。(例句3)
D. be supposed to 还可以用于表示“_____、被相信是……”。(例句4)
Key:
A. should
B. be not supposed to
C. 本应该
D. 被认为是……
【运用】
选择正确选项。
1. In Korea, the youngest person is supposed to ______(start / starting) eating first.
2. The plane was supposed ______(take off / to take off) an hour ago.
同义句转换,每空一词。
3. You are supposed to help your parents do the housework.
You ______ help your parents do the housework.
4. You shouldn’t stick your chopsticks into your food.
You ______ _______ ______ ______ stick your chopsticks into your food. 将下列句子翻译成汉语。
5. The train was supposed to arrive half an hour ago.
_________________________________________
6. My mother is supposed to be hard-working.
________________________________________
Grammar Focus
1. start
2. to take off
3. should
4. are not supposed to
5. 火车本应该在半小时前到达的。
6. 我妈妈被认为是勤快的。
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