1. rise and fall
涨落;抑扬
eg. We will be with you as rivers rise and fall.
无论河流水涨水落,我们都同你们在一起。
eg. Cadence means the rise and fall of the voice in reading with rhythm.
顿挫抑扬是形容朗读时声音的高低曲折和和谐的的节奏。
2. have to
必须;不得不;只好
eg. You will not have to wait long.
你只要等一会儿就成。
eg. You have to consider what to do next.
你必须考虑下一步该做什么。
3. as though
好像;仿佛
eg. It sounds as though you enjoyed Peru.
这听起来好像你喜欢秘鲁。
eg. Do this especially when you are feeling as though you have nothing to feel grateful for.
每天都要这么做,尤其是当你觉得好像没有什么可感激的时候。