tpo24 阅读,一个句子看不懂啊,尤其是 as the sleeper waxes and wanes作何解?First,there may be a brief cessation or reduction of breathing when falling asleep as the sleeper waxes and wanes between sleep and wakefulness and their differing control mechanisms. 英语
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【答案】 首先,当人入睡时呼吸可能会有短暂的中断或者减弱,因为入睡者的睡眠还不稳定,他在睡和醒之间波动,控制睡和醒的生理机制是不相同的. 追问: waxes and wanes是干什么的? 追答: as the sleeper waxes and wanes 做原因状语,在这个原因状语从句中,主语是the sleeper,谓语是waxes and wanes,因为主语是三单,所以加了s.意思是“入睡者的睡眠状态上下波动和起伏,不稳定”。如果还有疑问,请拨打电话18027252551.