12.2 短語動詞的被動語態(tài)
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　短語動詞是一個整體，不可丟掉后面的介詞或副詞。
　　This is a photo of the power station that has been set up in my hometown.
　　My sister will be taken care of by Grandma.　　
　　Such a thing has never been heard of before..