Gộp 2 câu dùng '' so that '', ''so as to'', ''in order to''  1. I wrote down the number. I didn't want to forget it. 2. He's started walking to work. He wants to get more exercise. 3. They stopped work at 1:00. They wanted to have lunch. 4. He hurried up to the station. He didn't want to miss the train. 5. I'll write to Mai. I want to invite her to my birthday party.  

Gộp 2 câu dùng '' so that '', ''so as to'', ''in order to'' 

1. I wrote down the number. I didn't want to forget it. I wrote down his telephone number in order to remember it

2. He's started walking to work. He wants to get more exercise.

He's started walking to work in order to get more exercise.

3. They stopped work at 1:00. They wanted to have lunch.

They stopped work at 1:00 so as to have lunch

4. He hurried up to the station. He didn't want to miss the train.

He hurried up to the station in order not to miss the train.

5. I'll write to Mai. I want to invite her to my birthday party.

 I'll write to Mai so as to invite her to my birthday party.