在备考AEIS考试学习中事实上,语法灵活的语言思维。我们为什么要学习语法?首先是为了读懂句子,其次是为了创造句子,而创造句子的 过程恰恰又能帮助我们进一步加强语法知识的学习。
一、be supposed to 的用法
1、be supposed to... 其中to是动词不定式符号,不是介词,其后要跟动词原形。当be supposed to... 的主语是“人” 时,意为“应该……”;“被期望……”,它可以用来表示劝告、建议、义务、责任等,相当于情态动词should。
例:Everyone is supposed to wear a seat-belt in the car.
每个人在汽车里都应该系安全带。
Teachers are supposed to treat all the students alike.
老师应该对所有的学生一视同仁。
2、当be supposed to... 的主语是“物”时,它表示“本应;本该”,用于表示“某事本应该发生而没有发生”
例:The new laws are supposed to prevent crime.
这些新法令本应该起到防止犯罪的作用。
The train was supposed to arrive half an hour ago.
火车本应在半小时之前到达。
3、be supposed to后面接“have 过去分词”时,表示“本应该做某事而没做”。
例:You are supposed to have handed in your homework by now.现在你应该已经把作业交上来了。
He is supposed to have arrived an hour ago.
他应该一小时前就到了。
4、be supposed to... 的否定结构为be not supposed to...,它常用于口语中,意为“不被许可;不应当”。
例:She was not supposed to be angry about that.
她本不该为那件事而生气的。
You are not supposed to smoke on the bus.
你不应该在公共汽车上吸烟。
二、be expected to do用法
1、be expected to do sth (某人)被期望/预料/估计做某事
例:Jack is expected to go home before ten at night.
杰克被期望晚上十点钟之前回家。
2、主动形式:expect sb to do sth 期望/预料/估计某人做某事
例:We expect him to come over and help.
我们希望他能过来帮忙。
3、expect 从句 预计 / 料想……
例:I didn’t expect that you would get there so soon.
我没想到你会这么快就到达那里了。
三、be expected to do 和 be supposed to do 区别
1、be supposed to do:理应做某事,口气更强一些,有希望做(成)……
它相当于should的这个用法。相对于be expected to do 主观性强一些.
例:You are supposed to clean the house.
你应该把房间打扫一下
3、be expected to do意为预料,表示一种可能性。 被期待做某事、有望做某事。
例:You are expect to clean the house.
我希望你把房间打扫一下
例:She is expected to be a good doctor.
他有希望成为一名好医生
以上就是小编为大家整理的关于AEIS英语语法be supposed to和be expected to do辨析,希望对大家有所帮助。更多AEIS考试时间、AEIS考试官方网站等问题可以咨询我们。
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