1.( 复those)
(referring back)那, 那个(指代已经提到的想法或情况)
That was a good year, wasn't it?那是一个好年头, 对不对？
Who told you that?谁告诉你那个的？
2.( 复those)<正式>(specifying which one)(用于that of、that which等短语中引出已经提到而要进一步说明的人或物, 以避免重复使用相关名词)
3.that is … or that's …
(when replying, reacting)那是…
She said she'd met you in England.—That's true.她说她在英格兰见到你了。——是那样的。
I've never been to Paris.—That's a pity. You should go one day.我从来没去过巴黎。——那真可惜。有朝一日你应该去一次。
4.( 复those)
(indicating something at a distance)那, 那个(指代离自己较远的人或物)
That looks heavy. May I carry it for you?那个看起来很重。我可以帮你搬吗？
5.( 复those)
(identifying someone)那个人
Who's that?那个人是谁？