we need to water the flowers every day(改为否定句)3种
题目
we need to water the flowers every day(改为否定句)3种
we______ ______ _______ water the flowers every day.
we______ ______ water the flowers every.
we______ ______ _______ water the flowers every day.
答案
1.We (don't) (need) (to) water the flowers every day.(need作实义动词)
2.We (need) (not) water the flowers every day.(need作情态动词)
3.We (don't) (have) (to) water the flowers every day.(用have to改)
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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