若能给我分析一下语法那就更好!
题目
若能给我分析一下语法那就更好!
--Did you go to Jack's birthday party? --No,I___. A.am not invited B.wasn't invited C.haven't invited D.didn't invite
The book Business@the Speed of Thought____in 1999. A.writes B.is written C.wrote D.was written
--The light in the office is still on. --Oh,I forgot___.A.turning it off B.turn it off C.to turn it off D.having turned it off
答案
1 B
2 D
前两道考查被动语态.
3 C ( forget to do sth ) 忘了关灯
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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