1,We learn English in order to have better communication with other people.
2,We lower the volume in order not to bother our neighbours.
3,I will wirte to you so that you can know my decision soon.
4,The girls didn't want anymore to hear their conversation, so that they were talking whispers.
5,I spoke loudly so that everybody could hear me clearly.
6,you must take your umbrella so that you won't get wet