1. My father was in Ha Noi last month.

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1. He traveled to Nha Trang by train.

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1. She went to the doctor because she was sick.

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1. Nam left home at 7 o’clock yesterday.

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1. He taught English in the high school.

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`1.` Where was your father last month?

`-` where : ở đâu `-` hỏi nơi chốn

`2.` How did he travel to Nha Trang?

`-` How + aux + S + go/get/travel + ...?

`->` hỏi phương tiện

`3.` Why did she go to the doctor?

`-` Why + aux + S + V_inf + O? `-` tại sao `-` hỏi nguyên nhân

`->` Because + S + V+ O : bởi vì

`4.` When did Nam left home yesterday?

`-` When : khi nào `-` hỏi thời gian

`5.` What did he teach in the high school?
`-` What : cái gì `-` hỏi sự vật

`_________________`

`*` QKĐ:

`(+)` S + V2/ed + O

`(-)` S + didn't + V_inf  + O

`(?)` Did + S + V_inf + O?

`1`. Where was your father in last month?

`2`. How did he travel to Nha Trang?

`3`. Why did she go to the doctor?

`4`. When did Nam leave home yesterday?

`5`. What subject did he teach at the high school?

`--------------`

`@` Hiện tại đơn:

`?` Where was/were/did + S + (Vnt) + O? (Hỏi ai đã ở đâu trong QK)

`?` How + do/did/does + S + Vnt + O? (hỏi ai đã làm gì bằng cách nào)

`?` Why + do/does/did + S + Vnt + O? (Hỏi tại sao ai đó làm việc gì)

`?` When + do/does/did + S + Vnt + O? (Hỏi ai làm gì vào lúc nào)

`?` What + N + do/does/did + S + Vnt + O? (Hỏi ai đã làm gì về cái gì)