Theboyisonlyfiveyearsold,buthecanplaygolfwell.A.able   ...

问题详情：

The boy is only five years old, but he can play golf well.

A. able                                             B. is able

C. be able to                                    D. is able to

【回答】

D。考查固定短语。be able to意为“能够; 会”, 与can意义相近, can无人称和数的变化; 而be able to有人称、数和时态的变化。主语是he, 时态为一般现在时, 因此句中要用is able to。故选D。

知识点：相似 相近词比较

题型：选择题