■ in charge of

这个词组的意义可以是双向性的，即某人可以 in charge of 某事，某事也可以 in charge of 某人。

• A nurse is in charge of the children.一位保育员负责照料孩子们。
• The children are in charge of a nurse.孩子们由一位保育员负责照料。

后一种说法，也可以用某事 in the charge of 某人，即 The children are in the charge of a nurse。