1、The people are very nice.改为感叹句How nice the people are!What nice people they are!他们是多好的人啊!2、The weather is very bad.What bad weather it is!How bad the weather is!多糟的天气啊!...Peter's little pet dog died and this made him vety unhappy改为同义句是什么呢Peter's little pet dog died and this made him very unhappy. 改为同义句Peter's little pet dog's death made him very sad.彼得的小宠物狗之死令他很难过。sad可以用unhappy 吗 为什么用death可以用的。death是“死亡”的名词形式，在同义句中作主语用。这样说更简明地道。