Great changes have taken place in the way of communication in people’s life in recent years. Microblog, a kind of online diary, covers a wide variety of topics ranging from small daily incidents to major global events. It provides the regularly updated information which is open to the public with very brief contents, usually within 140 words. As a new way of communication, microblog definitely has some positive influence on our life because it makes it convenient for people to express their feelings or opinions and exchange them with others. Besides, it enables news and messages to spread more quickly and widely than ever before. On the other hand, it also affects our life negatively because it is possible for people to give away their privacy or other significant personal information and some misleading information prevents the public from telling the right from wrong.

题目分析：考查提纲类作文，要求写一篇关于介绍微博的短文，要点都已经给出，包括基本信息，主要影响，要考生表达清楚，审题时注意本文使用的时态是一般现在时为主，运用合适的语法规则和词汇把各要点都准确表述出。难点在于选择词汇和句型，可以灵活运用省略句，倒装句和强调句型准确表述。如范文里面的It provides the regularly updated information which is open to the public with very brief contents, usually within 140 words.和As a new way of communication, microblog definitely has some positive influence on our life because it makes it convenient for people to express their feelings or opinions and exchange them with others.还有要用适当的关联词把文章串联起来：象such as，besides等等。

点评：提纲类短文的关键在于要点要全面包括，不能有遗漏和省略。同时注意谋篇布局的顺序，词汇句型的选用，运用合适的连接词连接全文，同时选择高级的词汇和语法项目让文章更有文采。