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Hi , I have just started teaching some 12-year-old children .

I want to know if there is any difference between the words those and '' they''.

Can they and those always be used interchangeably ?
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Nathan,
nathan mckaneCan they and those always be used interchangeably ?
- under no circumstances should they be used instead of one another. First, they belong to different classes of pronouns: they - to personal pronouns, those - to demonstratives. Secondly, the former substitutes a plural noun (Children are quick to learn - They are quick to learn), and the latter is more often used in conjunction with a noun (Those children are quick to learn). 'Those are quick to learn' is also possible, but there are intricacies which go beyond the scope of your question. You should consult a good grammar book before teaching 12-year-olds.

Respectfully, Gleb Chebrikoff
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nathan mckaneI want to know if there is any difference between the words those and they.
Can they and those always be used interchangeably ?
There is a difference, and they cannot be used interchangeably. For one thing you cannot use "they" like an adjective before a noun. For example, you say, "those tables" or "those birds" or "those cars", but you cannot say "they tables" or "they birds" or "they cars".

For the purposes of teaching beginners, you might do better to start only with sentences that have "they" with a verb ("they see", "they go", "they want", and so on) and sentences that have "those" with a noun ("those cars", "those workers", and so on). Later you can introduce other combinations.

CJ
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Comments  
Thanks very much for your comprehensive answers
Students: Are you brave enough to let our tutors analyse your pronunciation?

They is a plural form of pronouns "He and She" but " Those" is a plural form of " It "

We interchange They with Those when talking about persons. but we can't use They in place of Those when talking about things e.g

Those boys are friend = They are friend.