祈使句只能用and不能用then吗?为什么?
题目
祈使句只能用and不能用then吗?为什么?
答案
如果选项前边有个逗号,就用and;否则用then.
例如:Look around you at the wen and women whom you can call as happy as a king,______ you will see that they all have certain things in common.
A.but B.then C.and D.which
答案:C
Look around you at the wen and women whom you can call as happy as a king______ you will see that they all have certain things in common.
A.but B.then C.and D.which
答案:B
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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