she takes care of her sister.同义句her sister __ __ ___ __by __

问题描述:

she takes care of her sister.同义句her sister __ __ ___ __by __

is taken care of ....her,
其实是改为被动语态。

is taken care of ,her

she takes care of her sister.
同义句her sister (is taken care of) by (her).
变为被动语态.