[即学即练] 单句语法填空/一句多译
①Having lost the engine's power，the boat was now at the mercy of the wind.
②He was such a cruel man that he showed no mercy to others.
③He will be generous and merciful (mercy) to those who are weaker than himself.
④They had mercy on Tom for he suffered a lot.
＝ They showed mercy to Tom for he suffered a lot.
他们对汤姆表示同情，因为他受的苦难太多了。
