3. teach some new rules about the usages of the articles. 重点领悟： 1. how to use articles correctly in english communicating and writing grammar 1: compound words合成词 1、合成词在英语中比较活跃。合成名词的数量很大，可以用在句中作主语、宾语等。 sightseeing took up the whole morning.(作主语) finally they reached a cross-roads.(作宾语) smoking is not allowed during take-off.(作介词宾语) 合成名词常见的构词方法如下：
