this

1. DET You use this to refer back to a particular person or thing that has been mentioned or implied. 这 (指前面曾提及或暗指的人或物)

The entire portfolio is worth $160,312. Of this amount, my investment is worth only $7,748. 整个投资组合价值为$160312。在这当中，我的投资额仅为$7748。

2. PRON This is also a pronoun. 这

I don't know how bad the injury is, because I have never had one like this before. 我不知道伤势有多重，因为我以前从未受过这样的伤。

3. PRON You use this to introduce someone or something that you are going to talk about. 这 (用于引出将要谈论的人或物)

This is what I will do. I will telephone Anna and explain. 这就是我要做的。我会打电话向安娜解释。

4. DET This is also a determiner. 这

This report is from our Science Unit. 这份报告出自我们的科学部。

5. PRON You use this to refer back to an idea or situation expressed in a previous sentence or sentences. 这一点 (指前文曾提到的观点或情况)

You feel that it's uneconomical. Why is this?

你觉得这很不划算。这是为什么呢？

6. DET This is also a determiner. 这

There have been continual demands to put an end to this situation. 人们不断要求要结束这种局面。

7. DET In spoken English, people use this to introduce a person or thing into a story. 口语中用以引出故事里的人或物

I came here by chance and was just watching what was going on, when this girl came up to me. 我碰巧来到这里，正在看热闹，这时一个女孩向我走来。

8. PRON You use this to refer to a person or thing that is near you, especially when you touch them or point to them. When there are two or more people or things near you, this refers to the nearest one. 这个 (用于指附近或最近的人或物)

I like this coat better than that one. 我更喜欢这件大衣，而不是那件。

"If you'd prefer something else I'll gladly have it changed for you."—"No, this is great."

“如果您喜欢别的东西，我很乐意帮您调换一下。”—“不用，这个很好。”

9. DET This is also a determiner. 这个

This church was built by the Emperor Constantine Monomarchus in the eleventh century. 这座教堂是11世纪时君主康斯坦丁·莫诺马库斯建造的。

10. PRON You use this when you refer to a general situation, activity, or event which is happening or has just happened and which you feel involved in. 这 (指正在发生或刚发生的与自己有关的事)[PRON with 'be']

I thought, this is why I've travelled thousands of miles. 我想，这就是我走了几千英里路的原因。

11. DET You use this when you refer to the place you are in now or to the present time. 这 (指当前所处的地方或时间)

This country is weird. 这个国家很怪。

This place is run like a hotel ought to be run. 这个地方经营得像一个酒店一样。

12. PRON This is also a pronoun. 这

This is the worst place I've come across. 这是我到过的最糟糕的地方。

13. DET You use this to refer to the next occurrence in the future of a particular day, month, season, or festival. 这 (指即将要发生某事的时间)

...this Sunday's 7:45 performance. …这个星期天7:45的演出。

14. ADV You use this when you are indicating the size or shape of something with your hands. 这么 (用手表示物体的大小或形状时可说)[ADV adj]

"They'd said the wound was only about this big," and he showed me with his fingers. “他们说伤口只有这么大。”他用手指比划给我看。

15. ADV You use this when you are going to specify how much you know or how much you can tell someone. 这么 (用于说明自己所知道或所能告知内容的多少)[ADV adv]

I don't know if it's the best team I've ever had, but I can tell you this much, they're incredible people to be around. 我不知道这是否是我拥有过的最好的团队，但我可以这么告诉你，他们是非常棒的合作伙伴。

16. CONVENTION If you say this is it, you are agreeing with what someone else has just said. 是这样[英国英语]

"You know, people conveniently forget the things they say."—"Well this is it."

“你知道，人们会轻易地忘记自己说的话。”—“嗯，是这样。”

17. PRON You use this is in order to say who you are or what organization you are representing, when you are speaking on the telephone, radio, or television. 我是 (用在电话、广播或电视中作自我介绍)

Hello, this is John Thompson. 你好，我是约翰·汤普森。

18. DET You use this to refer to the medium of communication that you are using at the time of speaking or writing. 这个 (指说话或写字时使用的媒介)

What I'm going to do in this lecture is focus on something very specific. 我在这次讲座中将集中讲解非常具体的问题。

19. →see also these

20. PHRASE If you say that you are doing or talking about this and that, or this, that, and the other you mean that you are doing or talking about a variety of things that you do not want to specify. 各种事情

"And what are you doing now?"—"Oh this and that."

“那么你目前在做什么？”—“哦，各种事情。”