應該用甚麼Tenses?

1) Where did you buy? (past tense, infinitive "buy" is used after "did")
因為Tom已經買左對鞋,所以買那對鞋對於Tom來講係過去式

2) They cost $250. (past tense, "cost" is the pt and pp of "cost", it will be wrong if "costed" is used)
因為Tom已經買左對鞋,係當時對鞋係售250元,不代表現在也是,用past tense好D

3) Present tense
常客係此情況用現在式因為之前買鞋係常客而家都仍然係

4) Ken has eaten a packet of candies. (present perfect tense)
因為此處沒說明時間所以當Ken係而家講呢句說話,但Ken已經吃了,用present prefect tense表示
如果題目話Ken昨天吃了一包糖果。就係Ken had eaten a packet of candies yesterday.

5) I still like playing basketball. (present tense)
因為由始至終都鍾意打,連而家仍喜歡

1.Sally:你這對球鞋我很喜歡,你在那兒買的?
用past tense(bought)，因為當他穿著球鞋時，他已經(過去的事)買了。
2.Tom:我在[快速鞋店]買的,只售250元。
用present tense(cosy)，因為快速鞋店中球鞋的價錢現在依然賣250元。
3.Sally:你是不是[快速鞋店]的常客？
唔知你想問咩，請補充。
4.Ken吃了一包糖果。
用past tense(ate)，因為Ken已經吃了(動作已完成)
5.不管多辛苦,我還喜歡打籃球。
用present tense(play)，因為喜歡打籃球是經常動作(usually)。

1. bought
2. cost
3. Are
4. ate / eats
5. playing / to play

我唔只系要答案!!!系要埋個tenses既名同點解要咁做,但都多謝你願意幫忙！

1. bought
2. cost
3. Are
4. ate / eats
5. playing / to play