‘Like’ 的用法！！！

木可君

在GMATCLUB论坛看到个解说，关于Like的用法的，上面说了两个例子，我觉得有点问题啊。

首先它说了3.Tom needs a gym instructor like James. 这个句子是有问题的，这个我能理解。比较对象会出现ambiguity。

然后又举了个
In the above sentence, the comparison is between ‘I’ and ‘my brother’. My brother wants to be an investment banker, and so do I. This same meaning can be conveyed if we say:
I want to be an investment banker, like my brother. (‘I’ compared with ‘investment banker’)

为毛这句话不会产生ambiguity？可以是I & my brother或者 Inverstment Banker & my brother的对比啊。。

求解释！！！万分感谢！

木可君

后来往后看看到解释了。。

麻烦各位了！

1.        When ‘like + noun’ is separated from the sentence by a comma, the comparison is between the subject of the sentence and the noun following ‘like’.

2.        When ‘like + noun’ is not separated from the sentence by a comma, the comparison is between the object of the sentence and the noun that follows ‘like’. Note that this usage is correct only when there is no ambiguity about which two nouns are being compared.