1. I need a phone card to phone my parents.

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1. It’s about 500 km from Lai Chau to Ha Noi.

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`1` Why do you need a phone card `?`

`-` Dùng ''why'' để hỏi về lí do ai đó làm gì .

`2`

`@` What is the distance between Lai Chau and Ha Noi `?`

`@` How far is it from Lai Chau to Ha Noi `?`

`+` Dùng hai cấu trúc này để hỏi về khoảng cách .

`-` What is the distance + between + N1 + and + N2 `?`

`-` How far is it from + N1 + to + N2 `?`

I need a phone card to phone my parents

`->` Why do you need a phone card?   

`-` Hỏi lý do

It’s about `500` km from Lai Chau to Ha Noi

`->` How far is it from Lai Chau to Ha Noi?

`-` How far `+` will `+` S `+` V? (bao xa)