1. 情态动词,尤其是can/can’t,should/shouldn’t. for example: You should have washed the wound.你应该已经洗好了伤口 Well,you shouldn't be reading a novel.嗯,你不应该读一本小说 I can read this sentence in English. 我能用英语读这句话. We can be there on time tomorrow. 我们明天能按时去那儿. She can’t …