请帮忙讲解几道英语被动语态的习题
题目
请帮忙讲解几道英语被动语态的习题
You___ more beautiful in the light blue shirt.
A.see B.watch C.look D.look at
-What do you think of the TV play?-Wonderful.It is worth___ a second time.
A.watching B.watched C.seen D.seeing
How dirty the tables are!They need___.
A.to clean B.clean C.cleaning D.cleaned
请给出答案并解释
答案
C (look在这里做系动词,类似於be动词,而其他选项不能这样用)
A (be worth doing ,TV要接watch)
C (need doing=need to be done)
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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