Tom prefers to telephone his parents rather than write to them
题目
Tom prefers to telephone his parents rather than write to them
Tom prefers __ his parents ___ writing to them .
答案
前一个空可填calling,后一个填to,因为to是介词,所以to后面接动名词,prefer后面必须与to保持一致,所以也填动名词.
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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