she write a letter yesterday ? + - ? he sing an india song last week + - ? they ride a bike yesterday? + - ? my uncle buy anew book last nigtht? + - ?

1. (+)She wrote a letter yesterday
(-)she didn't write a letter yesterday
(?)did she write a letter yesterday?

2. (+) he sang an india song last week
(-) he didn't sing an india song last week
(?) did he sing an india song last week?

3. (+) they rode a bike yesterday
(-) they didn't ride a bike yesterday
(?) did they ride a bike yesterday?

4. (+) My uncle bought a new bike yesterday
(-) My uncle didn't buy a new bike
(?) did your uncle buy a new bike?

[Remember past tenses]
(+) S+V2+O
(-)S+did+not+V1+O
(?)did+S+V1+O (?)

(1.) + she write a letter yesterday
- she write not a letter yesterday
? write she write a letter yesterday?
(2.)+ he sing an india song last week
- he sing not an India song last week
? sing he an India song last week?
(3.)+ they ride a bike yesterday
- they ride not a bike yesterday
? ride they a bike yesterday?
(4) + my uncle buy a new book last nigtht
- my uncle not buy a new bok last
night
? uncle my buy a new book last night?
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