You are playing computer games,aren't you?Yes,but this is the first time I _ computer games

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Youareplayingcomputergames,aren''tyou?Yes,butthisisthefirsttimeI_computergamesYouareplayingcomputerga

You are playing computer games,aren't you?Yes,but this is the first time I _ computer games
You are playing computer games,aren't you?Yes,but this is the first time I _ computer games

You are playing computer games,aren't you?Yes,but this is the first time I _ computer games
正确答案是:have played.
固定句型:This/It is/was the + 序数词 + time + (that)从句,句意为“这是某人第几次做某事”.
其中要求that从句(that可以省略不用)必须采用完成时态.
如果是This/It is,从句用现在完成时;
如果是This/It was,从句则采用过去完成时.
句意可以进一步解释为“截至到现在/过去某一时刻为止,某人第几次做某事”,所以从句必须用完成时态.

have played

原形play

play

play

现在时 play 原型

play

玩电脑这件事延续到了现在,故应填have played

have played

play