1.think about 1.考虑…; 捉摸…2.对…有(某种观点)3.回想起,记起
例如：I should like to think about your suggestion before I give a definite reply.
我想先考虑一下你的建议,然后给你一个明确的答复.
think of 1.想起,记起; 想念2.有…想法,有…看法3.对…有意见4.考虑
例如：Will you think of me after I've left?
我离开之后,你还会记得我吗?
think over 1.仔细考虑2.重新考虑
例如：You have heard the proposal; now go away and think it over.
你已听了这项提议,现在去仔细想想.
think out 想出; 了解后果
例如：Let's think this out together—there must be a way to solve this.
让我们一起好好考虑一下吧,一定有办法能解决这件事情的.
只要了解了这几个短语的意思,就知道怎么使用了.还有很多其他的习惯用语,我就大致的写几个吧.
think back 回想,回忆.例如：I keep thinking back to school.
think nothing of 不屑一顾,几乎不考虑.例如：Thought nothing of a 50-mile trip every day.
2.Finally,she decided to buy that yellow knitted sweater.
knitted sweater是羊毛衫的意思,还可以用wool sweater表示.
3.go bike riding或者cycling safaris,随便你自己决定的.
4.He often plans to do everything very well.当然,不用very也可以.
好啦.回答完毕,请验收.哈哈.