that

Từ điển Oxford Advanced Learner 8th

that [that those] determiner, pronoun, conjunction, adverb
determiner BrE [ðæt] ; NAmE [ðæt] (pl. thoseBrE [ðəʊz] ; NAmE [ðoʊz] )
1. used for referring to a person or thing that is not near the speaker or as near to the speaker as another
• Look at that man over there.
• How much are those apples at the back?
2. used for referring to sb/sth that has already been mentioned or is already known about
• I was living with my parents at that time.
• That incident changed their lives.
•Have you forgotten about that money I lent you last week?
•That dress of hers is too short.

Word Origin:
Old English thæt, nominative and accusative singular neuter of se ‘the’, of Germanic origin; related to Dutch dat and German das.
Idioms: ↑and that ▪ ↑that is ▪ ↑that's it ▪ ↑that's that
 
pronoun BrE [ðæt] ; NAmE [ðæt] (pl. thoseBrE [ðəʊz] ; NAmE [ðoʊz] )
1. used for referring to a person or thing that is not near the speaker, or not as near to the speaker as another
• Who's that?
• That's Peter over there.
•Hello. Is that Jo?
•That's a nice dress.
•Those look riper than these.
2. used for referring to sb/sth that has already been mentioned, or is already known about
• What can I do about that?
• Do you remember when we went to Norway? That was a good trip.
•That's exactly what I think.
3. (formal)used for referring to people or things of a particular type
• Those present were in favour of change.
• There are those who say (= some people say) she should not have got the job.
•Salaries are higher here than those in my country.
4. BrE [ðət] ; NAmE [ðət] rare strong form [ðæt] ; NAmE [ðæt] (pl. that)used as a relative pronoun to introduce a part of a sentence which refers to the person, thing or time you have been talking about
• Where's the letter that came yesterday?
• Who was it that won the US Open?
•The watch (that) you gave me keeps perfect time.
•The people (that) I spoke to were very helpful.
•It's the best novel (that) I've ever read.
•We moved here the year (that) my mother died.  In spoken and informal written English that is nearly always left out when it is the object of the verb or is used with a preposition.

Word Origin:
Old English thæt, nominative and accusative singular neuter of se ‘the’, of Germanic origin; related to Dutch dat and German das.

Language Bank:
i.e.
Explaining what you mean
▪ Some poems are mnemonics, i.e. ▪ they are designed to help you remember something.
▪ Some poems are mnemonics, that is to say ▪, they are designed to help you remember something.
▪ Mnemonic poems, that is ▪ poems designed to help you remember something, are an excellent way to learn lists.
▪ A limerick's rhyme scheme is A–A–B–B–A. In other words ▪, the first, second, and fifth lines all rhyme with one another, while the third and fourth lines have their own rhyme.
▪ In this exercise the reader is encouraged to work out the meaning, or rather ▪ the range of meanings, of the poem.
▪ This is a poem about death, or, more precisely ▪, dying.
▪ He says his poems deal with ‘the big issues’, by which he means ▪ love, loss, grief and death.
Language Bank at ↑about
 
conjunction BrE [ðət] ; NAmE [ðət] rare strong form [ðæt] ; NAmE [ðæt]
1. used after some verbs, adjectives and nouns to introduce a new part of the sentence
•She said (that) the story was true.
•It's possible (that) he has not received the letter.
•The fact (that) he's older than me is not relevant.  In spoken and informal written English that is usually left out after reporting verbs and adjectives. It is less often left out after nouns.
2. so… that… used to express a result
•She was so tired (that) she couldn't think straight.  In informal English that is often left out.
3. (literary)used for expressing a hope or a wish
•Oh that I could see him again!

Word Origin:
Old English thæt, nominative and accusative singular neuter of se ‘the’, of Germanic origin; related to Dutch dat and German das.
 
adverb BrE [ðæt] ; NAmE [ðæt]
1. used when saying how much or showing how long, big, etc. sth is with your hands
•I can't walk that far (= as far as that).
•It's about that long.
2. not (all) ~ not very, or not as much as has been said
•It isn't all that cold.
•There aren't that many people here.
3. (BrE, informal)used to emphasize how much
•I was that scared I didn't know what to do.

Word Origin:
Old English thæt, nominative and accusative singular neuter of se ‘the’, of Germanic origin; related to Dutch dat and German das.