二、 容易混淆的名词

[考试说明]　了解名词在句中所充当的成分，理解并能区别所学的可数名词和不可数名词；熟练掌握所学可数名词复数形式的构成，在口语和书面语的表达中正确运用；掌握物质名词及其数量的表达方法；了解专有名词的概念及一般用法；熟练掌握所学名词所有格的用法；了解集合名词和抽象名词的概念及一般用法。
 1. job, work
[误]　I'm busy today, for I have a lot of jobs to do.
[正]　I'm busy today, for I have a lot of work to do.
job意思是a piece of work，指已做或要做、应做的具体的某种工作，实际含义是“职业”，而work通常指抽象意义上的工作，是不可数名词，也可指“工作场所”。
 2. by train, change trains
[误]　We came here by the train.
[正]　We came here by train.
[正]　We came here on/in the train.
[误]　We have to change the train at the next station.
[正]　We have to change trains at the next station.
train意思是“火车”，表示“乘火车”，用by train或on/the train；表示“换火车”，用change trains，train必须用复数形式，且前面不加限定词。