Habits，whether good or bad，are generally acquired. When a person does a certain thing once and again，he is impelled by some unseen force to do the same thing repeatedly；thus a habit is formed. Once a habit is formed，it is difficult，and sometimes impossible，to shake it off. It is therefore very important that we should take great care in the formation of habits. Some bad habits formed in childhood may remain lifetime. Older persons also form bad habits，and in some cases they are ruined by these bad habits.  There are good habits which，when formed in early life，are great blessings. Many successful people declare that they owe much of their success and prosperity to the formation of such good habits as punctuality，honesty，and perseverance in early life.   Such habits as rudeness，laziness，stealing and slandering are bad habits. If we want to be useful to society，we ought to keep away from ail these vices，and strive to acquire those habits that are proven to be good for ourselves and others. 

试题分析：这是一篇提纲类作文，话题是论习惯 On Habits。我们需要用正确的英语把给出的要点表达出来.本作文中给出的要点比较具体,故需要准确表达.写作时注意准确运用时态，上下文意思连贯，符合逻辑关系，尽量使用自己熟悉的单词句式，同时也要注意使用高级词汇和高级句型使文章显得更有档次。特别注意在选择句式时要赋予变化。象范文的It is therefore very important that we should take great care in the formation of habits. 是it做形式主语的用法，There are good habits which，when formed in early life，are great blessings.就是用了状语从句的省略式。
点评：本文属于提纲类作文，动笔前，一定要认真分析要点，理解要点要表达的含义，不能遗漏要点，跑题偏题。平时除了加强词汇积累，写作联系以外，还可以适当记忆一些类似的范文，这样在考试中可以起到事半功倍的效果。