关于英语现在完成时的问题
题目
关于英语现在完成时的问题
1 His father joined the party _____ A.for three years B.since three years ago C.three years ago D.in two years' time 2.Her father____ in 1990 and her husband ____for more than five years.A.died ,dead B.has died ,dead C.died,has been dead D.has died.has died 3.Lihua's bother has ____for tuo years.A.joined the army B.been an army C.become a soldier D.been in the army 4.He hansn't ______ quanzhou ever since he left school.A.left B.been away C.been D.away 5._____ you ever_____to nanjing.Yes ,I _____ there last year.A.Have ,gone ,have gone B.Have.been ,went C .Did...go ,went D.Did...go ,has been
答案
1 His father joined the party _____ A. for three years B.since three years ago C.three years ago D.in two years' time 答案C 意思是 他爸爸三年前入的党. A for three years 是一个时间段,有三年的意思.一般...
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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