英语表达：睡眠

• He is sleeping poorly.（他睡不好）
• He has difficulty in sleeping, inability to concentrate.（他不易入睡，也难集中精神。）
• It is usually hard for her to fall asleep when she goes to bed at night.（她晚上就寝，很难入睡。）
• He wakes during the night or early morning and finds it difficult to fall asleep again.（他晚间或清早醒来后，再也不能入睡。）
• He has nightmares occasionally.（他有时做噩梦。）