失眠了，英语怎么表达？

　　1. I couldn't fall asleep last night.

　　我昨晚睡不着。

　　2. I was awake all night.

　　我彻夜未眠。

　　3. I was up all night.

　　我一整晚都没睡。

　　4. I didn't sleep all night because I was worrying about my exams.

　　我因为担心考试一整晚没睡着。

　　5. I've been suffering from insomnia.

　　我近来饱受失眠之苦。

　　6. I didn't close my eyes until early this morning.

　　我一直到凌晨才睡着。

　　7. I tossed and turned in bed all night.

　　我一整晚辗转难眠。

　　8. Sleeping pills somehow didn't work for me last night.

　　昨晚不知怎么搞的安眠药好象对我没用。

　　9. I was counting sheep all night.

　　我一整晚都在数羊。

　　10. I guess I drank too much coffee. I was wide-awake all night.

　　我想我可能是喝了太多咖啡，一整晚都很清醒。