He wanted to make sure that you didn't throw it away.他不希望你扔掉它

make sure: 设法确保

I'm going to make sure if I'm going to Macao.

我要拿定主意我是否去澳门。

I'll make sure of the time of the flight.

我要核实一下这班飞机的时间。

throw away:扔掉； 抛弃

Don't throw away your old shoes,give them to me.

不要扔掉你的旧鞋子，给我吧。

He threw away the chance of a good job.

他错过了得到一份好工作的机会。

I can think of a reason.我觉得有一种解释

think of:想到

I couldn't think of the name of that man anyhow.

我怎么也想不出那人的名字来了。

Just think of what we could learn there!

只要想想我们在那儿可以学到东西吧！

相关短语：think much of重视

I don't think much of his ideas.

我认为他的一些看法并不怎么样。

词义辨析:think of，think about，think over这三个词组都与“想”有关，但所表达的含义有所不同。

think of多用来指“想起，认为”。

think about多用来指“考虑某事情或对某事进行思考”。

think over意思是“仔细考虑，认真思考”。