He is always busy, so I don’t care________________________(他是否有空) this Sunday.wh

游客2023-07-15 26

问题 He is always busy, so I don’t care________________________(他是否有空) this Sunday.

选项

答案 whether or not he is free/whether he is free or not

解析本题的考查点是“是否”的表达方式用whether of not，注意if不能用于此种结构。

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