相同形式的词组辨析：
1、both of 表示两者都怎么样,后面的名词必须指两者
例句：Both of the wrestlers tried to tumble the adversary with all their strength.
双方摔跤运动员都使出了全身气力想把对手摔倒。
2、all of 表示三者或三者以上都怎样,后面的名词得是表示三者或更多
例句：All of these people gave me a great deal of information I had never heard of.
这些人都给了我许多闻所未闻的知识。
3、some of表示其中一部分怎样
例句：I got on to him and explained some of the things I had been thinking of.
我同他取得了联系，并向他解释了我一直在思考的一些事情。