Ⅰ. think of “想起、记起;有……想法、看法;对……有意见;考虑” 如：
① Will you think of me after I’ve left? 我离开后，你还会记着我吗?
② I know the person you mean,but I can’t think of his name. 我知道你讲的人是谁，但记不起他的名字。
④ We are thinking of going to Spain for our holiday this year.我们今年有到西班牙去休假的想法(打算)。
⑤ What do you think of my new dress? 你认为我的新衣服怎么样?(可与think about 互换)
⑥ She thinks of no one but herself.她除自己外不考虑任何人。
Ⅱ. 当它作“想到过去的某事”或“考虑到某事”解时，常与think about 通用。即：“……考虑”;“对……看法”
① We have many things to think of / about before going there. 在动身去那之前，我们还有许多事情要考虑。
②见Ⅰ④
Ⅲ.think about 可以表“想、回想”着重于想的过程。如：
① I am thinking about the friends I have lost.我正在回想那些失去了的朋友。
[注]：think of 可以表“想象一下，想想”而think about 则不能。—→Think of your mother!想想你的母亲吧!
—→Think of the danger! 想象一下危险吧!
Ⅳ.think over “仔细考虑”其中over 是副词。如：
①I will think the thing over. 我要把这事仔细考虑一下。