Question

17．2009年初，甲型H1N1流感在墨西哥出现，然后很快在西方国家蔓延，现在亚洲也出现了这种病毒的感染者．专家们说，从身边的小事做起，是远离；病毒的关键．请根据以下图片及方框中的短语，为每幅图片配一句话，说明我们应该怎么做．

wash hands； drink boiled water； wear masks（ 口罩）；keep the door and windows open； take exercise
86．To keep healthy，we should take exercise every day．
87．We'd better drink boiled water when we are thirsty．
88．We must wash hands very often，especiallybefore meals．
89．We must keep the door and windows openseveral times a day to let the fresh air in．
90．We can wear masks，when we are on busystreets or crowded buses．．

Answer 1

分析 86、为了保持健康，我们应该每天锻炼．
87、我们口渴的时候最好喝开水．
88、我们必须勤洗手，尤其是饭前洗手．
89、每天门窗要开几次，让新鲜空气进来．
90、当我们在繁忙的街道或拥挤的公共汽车上时，我们可以戴上口罩．

解答 86．To keep healthy，we should take exercise every  day．keep healthy保持健康，take exercise 锻炼．To …为了…，动词不定式表示目的．
87．We'd better drink boiled water when we are thirsty．had better最好做某事，后跟动词原形，这是when引导的时间状语从句，当…时候．
88．We must wash hands very often，especially before meals．must情态动词，必须，后跟动词原形．
89．We must keep the door and windows open several times a day to let the fresh air in． keep the door and windows open 让门和窗开着．let the fresh air in让新鲜空气进来．
90．We can wear masks，when we are on busy streets or crowded buses．这是when引导的时间状语从句，当…时候．wear masks戴口罩．

点评 动笔前可以按照材料内容列出简单提纲，写出关键单词．写作中注意语义通顺，符合逻辑关系．上下文之间可以适当使用连接词．如but，so，then等．