paul bought a car a week age.(用现在完成时改写) pual__ __ a car__ a week ago.

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paul bought a car a week age.(用现在完成时改写) pual__ __ a car__ a week ago.

has had,since
自从一星期以前保罗就买了一辆车.
本句型主句需要用延续性动词,所以,必须把bought 改成had (都是“买”的意思)

has bought since