det (1)那(个) (which is/are over there)： bring me～book/box 把那本书/那个盒子给我拿来;put sth into～drawer/box 把某物放到那个抽屉/盒子里去;Look at～man/woman over there. 看那儿的那个男人/女人。Shall I sit in this chair or～one? 我坐这把椅子还是那把?take those books to sb's room 把那些书拿到某人的房间去;Those clouds drifted away. 那些云朵飘走了。 at～time 那时;in those days 那时;〖反〗this，these;

(2)那个(指已提到过的人或物)(which was mentioned or indicated some time ago)：Do you remember/see～boy (old man) who came to the house last month? 你记得/看见上个月来我们家的那个男孩(老人)吗?The book he wrote is very interesting. T～book sold a ten thousand copies. 他写的那本书非常有趣。那本书卖了一万册。 We visited those places last summer. 去年夏天我们参观了那些地方。〖反〗this，these;

(3)那(用于后接一物主代词的名词前)(used with a noun followed by possessive)：～friend of his/dress of hers/stinking rattling old bike of yours 他的那个朋友/她的那件衣服/你那讨厌的嘎嘎响的旧自行车;

(4)那(用于关系代词的先行词之前)(used in front of the antecedent of a relative clause)：～money I borrowed from you 我向你借的那笔钱;～man you were talking with和你交谈的那个人;Those students who passed the CET-6 are very excited. 大学英语六级考试通过了的那些学生非常兴奋。

pron(1) 1)那个，那(one over there;ones over there)：T～is something completely different. 那是完全不同的一回事。T～is your dog/my coat/a nice hat. 那是你的狗/我的大衣/一顶好看的帽子。Those are apples;these are oranges. 那些是苹果，这些是橘子。These are/look much better/juicer than those. 这些比那些要好得多/看起来汁多些。2)那(指人，用动词be)(used to indicate a person as pointed out)：Who's～in the garden? 花园里的那个人是谁?T～is her mother/her boss. 那是她母亲/她的老板。

(2)那(个)(指已提到的事情)(used to indicate one of two or more persons，things，etc already mentioned)：T～is why I'm giving this party tonight/I don't like her. 那就是我今晚要举行晚会/我不喜欢她的原因。I've no doubt about～. 我对那件事毫不怀疑。I'm going to the shops this morning but before～I'm going to wash my hair. 今天早晨我要去买东西，但走之前我先要洗头。〖反〗this;

(3)那(用作关系从句的先行词)(used as the antecedent of a relative clause)：Is～ what he told you? 那就是他告诉你的事情吗?All those who want a copy of this report，please sign their names on this list. 凡是想要一份这个报告的人，请在这张表上签名。

that is(to say)换句话说：John is a New Yorker;～is，he lives in New York. 约翰是纽约人;换句话说，他住在纽约。

that's that 就这么定了：Well，～'s～;now we can go home. 好了，就这么定了，现在我们可以回家了。

relative pron (1)(用于名词后，引导一个限定性定语从句，指称事物或人)(used to refer to a person，thing，etc mentioned in a preceding clause in order to distinguish it from others)：The man～spoke to me is my English teacher.和我说话的那个人是我的英语教师。Where is the parcel～arrived this morning? 今早上来的包裹放在哪儿了?Everyone (～) I have asked agreed with me. 我问过的每个人都同意(我的想法)。Those books (～) you lent me were very useful. 你借给我的那些书非常有用。Who is the man (～) you are talking to?和你谈话的那人是谁?The picture (～) my sister is looking at was drawn by my wife. 我姐姐正看着的那张画是我妻子画的。I have never taken anything～didn't belong to me. 我从来不拿不属于我的东西。

(2)(引导位于the only，any，all，much，the same等或最高级之后的定语从句)(used to introduce a clause following superlatives，the only，any，all，much，etc)：He is the only man～can do it. 他是唯一能做这件事的人。Any boy～wants to play can do so. 想去玩的男孩子都可以去。The book is the best～has ever been written on the subject. 该书是有关这个主题写得最好的一本。

(3)(用于表示时间的词之后代替when)(used as relative adv when;to/on which)：the year～he arrived 他来的那年;happen on the day～it snowed heavily 发生在下大雪那天;

conj (1)(引导从句)(used to introduce a subordinate clause)：T～he'll help is certain. 他来帮忙是肯定的。I know～he is here/she is coming tonight. 我知道他在这儿/她今晚上来。The fact is～he doesn't really try. 事实是他根本就没努力。The news～we're having a holiday tomorrow is not true. 有关我们明天休假一天的消息不是真的。He was so rude～she refused to speak to him. 他太无礼了，她拒绝和他讲话。

(2)(用于表示愿望和懊悔)(introduce an exclamation of desire，regrets or wishes)：Oh～you could be quiet. 但愿你能安静一些。T～he should act so rudely toward you! 他竟然对你如此无礼!

adv 那样(么)，这么(to that extent;so)：The little boy is～good/ill. 那个小男孩那么好/病得那么重。The task is～difficult. 这项工作那么艰难。We did not believe the fish was～big. 我们不相信那条鱼那么大。

【用法】 1)that 可用在限定性定语从句中，不能用在非限定性定语从句中(非限定性定语从句用which 作关系代词)。2)表示状态时，that 相当于in which。如：the way that (=in which) she talks(她说话的样子); 3)that 当where 讲时，通常不能省略介词，我们要说：the house (that) he lives in(他住的房子)， in不能省略。

【辨异】that和which 都可引出定语从句。that 一般用于引出限定性定语从句，可指物，也可指人，如：The house～has green shutters has been sold.(有绿色百叶窗的那所房子已经卖出。)The man～you saw is my father.(你看到的那人是我的父亲。)which 也可引出限定性从句，但指物(此时也可用that代替which)，而不指人，如：He lives in the house which/that is opposite ours.(他住在我们家对面的房子里。)which 还可引出非限定性定语从句，引出的从句是补充描述(说明)性的，如：My new car，which I paid several thousand pounds for，is not running well.(我花了几千英镑买的这部新车，不好开。)