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PRON
那，那个(指代前面句子里提到的)
You use that to refer back to an idea or situation expressed in a previous sentence or sentences.
例句
They said you particularly wanted to talk to me. Why was that?...
他们说你特别想和我谈谈。为什么？
'Hey, is there anything the matter with my sisters?' — 'Is that why you're phoning?'...
“喂，我的姐妹们没事儿吧？”——“你打电话就为这个？”
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DET
那个人,那个(用来指代已经提到的人或物)
You use that to refer to someone or something already mentioned.
例句
The Commissioners get between £50,000 and 60,000 a year in various allowances. But that amount can soar to 90,000 a year...
委员们每年领取的各种津贴在 5 万到 6 万英镑之间，但最高可达 9 万英镑。
The biggest increase was on the cheapest model, the CRX-HF. That car had a 1990 base price of $9,145.
涨价最快的是最便宜的车型 CRX-HF，那款车 1990 年的基价是 9,145 美元。
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DET
那，那个(指已经谈到过的特定时期)
When you have been talking about a particular period of time, you use that to indicate that you are still referring to the same period. You use expressions such as that morning or that afternoon to indicate that you are referring to an earlier period of the same day.
例句
The story was published in a Sunday newspaper later that week...
这篇报道于那周晚些时候刊登在一份周日报纸上。
That morning I had put on a pair of black slacks and a long-sleeved black blouse.
那天早上，我穿了一条宽松的黑裤子和一件长袖黑衬衫。
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PRON
(用于 that of, that which 等短语中引出有关上文提到的某事物的更多信息，而避免重复相关名词)
You use that in expressions such as that of and that which to introduce more information about something already mentioned, instead of repeating the noun which refers to it.
例句
A recession like that of 1973–1974 could put one in ten American companies into bankruptcy...
像 1973–1974 年间那样的经济衰退能让 1/10 的美国公司破产。
Indoor pollution falls into two categories, that which we can see or smell, and pollution which is invisible and produces no odour.
室内污染分为两种：一种是我们能看得见或闻得着的，另一种是无色无味的。
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PRON
那个，那(用于对前述内容表示同意或作出应答的词和词组前)
You use that in front of words or expressions which express agreement, responses, or reactions to what has just been said.
例句
'She said she'd met you in England.' — 'That's true.'...
“她说她在英格兰见过你。”——“是的。”
'I've never been to Paris.' — 'That's a pity. You should go one day.'
“我从没去过巴黎。”——“可惜了，你什么时候应该去一次。”
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DET
那一个，那个(引出将要更加详细介绍的人或物)
You use that to introduce a person or thing that you are going to give details or information about.
例句
In my case I chose that course which I considered right...
至于我呢，就选择了我认为正确的那条路线。
That person who violates the law and discriminates should suffer in his career.
非法歧视他人的人在事业上应该受到惩戒。
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DET
那个(指代在时间、空间上离自己稍远的人或物，尤用于指示;有两个以上的事物时，that 指较远的那个)
You use that when you are referring to someone or something which is a distance away from you in position or time, especially when you indicate or point to them. When there are two or more things near you, that refers to the more distant one.
例句
Look at that guy. He's got red socks...
你看那边那个家伙，他穿着双红袜子。
Where did you get that hat?...
你那顶帽子在哪儿买的？
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PRON
(用于指明或询问身份)
You use that when you are identifying someone or asking about their identity.
例句
That's my wife you were talking to...
刚才和你说话的人是我老婆。
That's John Gibb, operations chief for New York Emergency Management...
那个人是约翰·吉布，纽约应急管理办公室的行动总指挥官。
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DET
(不需明确指出的情况下谈话对方即可能知道所指的人或物)那个
You can use that when you expect the person you are talking to to know what or who you are referring to, without needing to identify the particular person or thing fully.
例句
I really thought I was something when I wore that hat and my patent leather shoes...
我头戴那顶帽子，脚蹬漆皮鞋，当时感觉挺像那么回事儿。
Did you get that cheque I sent?...
你收到我寄给你的那张支票了吗？
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ADV
不太，不那么(坏、滑稽、昂贵等)
If something is not that bad, funny, or expensive for example, it is not as bad, funny, or expensive as it might be or as has been suggested.
例句
Not even Gary, he said, was that stupid...
他说，就连加里也没有那么蠢。
It isn't that funny...
没有那么好笑。
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ADV
那么，那样(用于强调感情或品质的程度之深)
You can use that to emphasize the degree of a feeling or quality.
例句
I would have walked out, I was that angry...
我差点中途退席，我太生气了。
Do I look that stupid?...
我看起来有那么蠢吗？
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PHRASE
等等;诸如此类
You use and all that or and that to refer generally to everything else which is associated with what you have just mentioned.
例句
I hate to be nasty and all that...
我不想讲些难听的话什么的。
I'm not a cook myself but I am interested in nutrition and that.
我本人不是厨师，但对营养之类的事很感兴趣。
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PHRASE
此外，而且(用于陈述之后，修饰或强调所说的话)
You use at that after a statement which modifies or emphasizes what you have just said.
例句
Success never seems to come but through hard work, often physically demanding work at that...
不付出艰苦的努力似乎就不会取得成功，而且这一努力通常要劳其筋骨。
The caféwas popular with locals, and not with the more respectable locals at that.
那家咖啡馆很受当地人欢迎，不过不包括当地那些更有身份的人。
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PHRASE
就是说;即;换句话说
You use that is or that is to say to indicate that you are about to express the same idea more clearly or precisely.
例句
I am a disappointing, though generally dutiful, student. That is, I do as I'm told...
我虽然总的来说循规蹈矩，但依然是个令人失望的学生，就是说，叫我做什么我就做什么。
Education Ministers ought to have placed the interests of consumers — that is to say pupils — first.
教育部长们应该把服务对象——也就是学生——的利益放在首位。
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PHRASE
就这样，好了(表示不必再做什么或目的已经达到)
You use that's it to indicate that nothing more needs to be done or that the end has been reached.
例句
When he left the office, that was it, the workday was over.
他一离开办公室，就此打住，一天的工作就结束了。
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CONVENTION
对，是这样(表示同意、赞许)
You use that's it to express agreement with or approval of what has just been said or done.
例句
'You got married, right?' — 'Yeah, that's it.'
“你结婚了吧？”——“嗯，结了。”
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PHRASE
就那样(强调某事突然发生、立即做完或过程很简单，常指未加思考、讨论)
You use just like that to emphasize that something happens or is done immediately or in a very simple way, often without much thought or discussion.
例句
Just like that, I was in love...
就那样，我恋爱了。
You mean he sent you back just like that?
你是说他就那样把你打发回来啦？
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PHRASE
就这样，就这么定了(表示无能为力、无话可说)
You use that's that to say there is nothing more you can do or say about a particular matter.
例句
'Well, if that's the way you want it,' he replied, tears in his eyes, 'I guess that's that.'
“好吧，如果那就是你想要的，”他两眼含泪说道，“我想那就这样吧。”
'I want you to go home.' — 'I'm staying here, and that's that.'
“我想让你回家。”——“我就待在这儿，就这么定了。”