we are not_____ to stay outside so late.(suppose)
题目
we are not_____ to stay outside so late.(suppose)
能不能讲的细一点
答案
supposed
be supposed to 的用法
用法一: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.如:
Everyone is supposed to wear a seat-belt in the car.
用法二: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”.如:
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.
用法三:be supposed to后面接“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.
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.
用法四: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”.如:
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.
举一反三
已知函数f(x)=x,g(x)=alnx,a∈R.若曲线y=f(x)与曲线y=g(x)相交,且在交点处有相同的切线,求a的值和该切线方程.
我想写一篇关于奥巴马的演讲的文章,写哪一篇好呢?为什么好
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