But even with more traffic and fewer sidewalks, modern parents do have one advantage their parents didn’t: the cell phone. Being able to check in with a child anytime goes a long way toward relieving parental anxiety and may help parents loosen th...
15过去将来完成时(would have done) 表示就过去某一时间而言,将来某一时间之前所完成的动作。常用在虚拟语气中,表示与过去事实相反。 例:I believed by the end of that year an advanced version of that software would have been developed, but I was wrong. 我坚...
1.should have done =ought to have done 本应该做而没做 2.would have done = 本来就会去做某事而没做 3.could have done = 本可以做某事而没做 4.might have done 本可以做而没做 例:They ought to have apologized. 他们本该道歉的。 5. must have done sth 一定做...
高中英语时态讲解(现在完成时) 现在完成时(have/has done) ① 表示动作到现在为止已经完成或刚刚完成,强调对现在产生的影响。 例:I bought a new house, but I haven't sold my old one yet, so at the moment I have two houses. 我买了一所新房子,但是还没有卖掉旧...
28.It ___ around nine o'clock when I drove back home because it was already dark. A) had to be B) was to be C) must be D) must have been 29.If you act ___ the doctor's advice ,you won't get well again. A) aside from B) contrary to C)capable of D) p...
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