like與unlike

下面這個句子有問題嗎?

The teacher only likes good students, and unlike bad students.

這是一個有問題的句子。主要問題出在誤將unlike用作動詞。在現(xiàn)代英語中，unlike只用作介詞或形容詞，不用作動詞。如：

They are so unlike that nobody would believe they were sisters. 她們毫無相似之處，誰也不相信她們是姐妹。

She is unlike her mother; she is tall and her mother is very short. 她不像她媽媽；她很高，而她媽媽很矮。

For twins, they are very unlike. 作為一對雙胞胎，他們很不一樣。