recover

1.下面四句意思不同：

• He recovered.（他复原了。）
• He had recovered.（他已经复原了。）
• He was recovered.（他已经在复原的状态中了。）
• He was recovering.（他正在复原中［尚未复原］。）

2.下面四句都作“他已经复原了”解，但第四句不很普通。

• He has recovered.
• He has recovered his health.
• He has recovered from his illness.
• He has recovered his illness.