My name is Sam. Yesterday was my dad's birthday party. 

     First, some of my dad's friends came. I opened the door because my dad didn't know about the party. Then my dad's brother and his family arrived. Dad was very happy when he saw them, They brought him some presents. John bought him a baseball bat. and Jake gave him a tennis ball. We ate the birthday cake that my aunt made, and we drank orange juice. There were many balloons in the room.

     After the party, me and my dad went to the park and played baseball. It is my dad's favourite sport. My dad didn't hit the ball very hard, so I caught it many times.

     We had so much fun!

- birthday (n): sinh nhật

- present (n): quà

- baseball bat (n): gậy bóng chày

- tennis ball (n): quả bóng quần vợt

- birthday cake (n): bánh sinh nhật 

- orange juice (n): nước cam

- balloon (n): bóng bay

- favourite (adj): yêu thích nhất

- fun (n): niềm vui 

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`***` Quá khứ đơn

`-` Với tobe

`(+)` S + was/were

`(-)` S + was/were + not

`(?)` (Wh) + Was/Were + S?

`-` Với động từ thường

`(+)` S + V2/ed

`(-)` S + didn't + V

`(?)` (Wh) + Did + S + V?

`->` DHNB: yesterday, this morning, in the past, last + mốc thời gian, khoảng thời gian + ago, in + năm trong quá khứ,...