1.填空：he is not as ___(good)at English as his sister
题目
1.填空：he is not as ___(good)at English as his sister
2.改错：Ling Ying is as bettr at sports as her sister the three students are both 15years old
答案
good (as +形容词原级+ as)
他的英语不像他的姐姐一样好.
改错 better改 good 同上题
both 改all （三者或三者以上时用all ,两者用both）
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．
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