原句：I have lived in cities all my life and when I am at home I usually take
the subway or bus.1. 为什么该句前面用现在完成时have lived？2. 为什么是用city复数？而不是用单数city呢？3. 为什么是take the subway or bus用定冠词the的，而不是用不定冠词a呢...
The evening conversation, when they were all assembled, had lost much
of its animation, and almost all its sense, by the absence of Jane and
Elizabeth.他们一家子晚上聚在一起聊天的时候，Jane和Elizabeth不在场，谈话就没有了活力，而且几乎是完全失去了意义。请...
...rica never was America to me, And yet I swear this oath— America will be!Now it should be incandescently clear that no one who has any concern for the integrity and life of America today can ignore the present war. If America’s soul becomes totally poisoned, part of the autopsy must read “Viet...
...a unique millennium technology canlendar that gives the latest dates when we can expect hundreds of key breakthroughs and discoveries to take place.网上一边倒的说应该理解为结果状语！
After the interruption, the speaker went on talking as if nothing had happened.When I told them my plan, they looked at me as if I was mad.请教老师这两句话是虚拟吗？是不是如果主句是过去时，as if 是否是虚拟看不出来？谢谢！