It was quite different from what I expected.

different from... 和...不一样
不能说：It and i expected was quite different 。
可改成：What I expected was quite different.

different from... 和...不一样,固定搭配要死记硬背
Different from and different than are both common in British and American English. Critics since the 18th century have singled out different than as incorrect, though it is well attested in the works of reputable writers. Where the comparison is drawn directly between two persons or things, from is usually the safer choice:
Different from 和 different than 英语和美语中都经常见。 虽然后者经常出现在名作家的作品中，但18世纪以来，评论家仍指出different than 为相对正确的选择。 当直接对两人或两物进行比较时，from 是最保险的选择 ：
My book is different from (not than ) yours.
我的书不同于（不是 than ） 你的。 But different than is more acceptably used, particularly in American usage, where the object of comparison is expressed by a full clause:
但different than 的比较对象用一完整的句子表示，特别是在美语用法中，这种用法更能接受：
The campus is different than it was 20 years ago (or
校园和二十年前不一样了（或
The campu