中学生英语学习常见错误一览表1
2020-02-09［误］ he ran across the wood.
［正］ he ran through the wood.
［析］ across是指某一动作在一平面内进行，而through则是指该动作在一三维立体空间的运动过程。如：the man came in through the window. he walked across the square.
across
across的主要用法有两个。其一，意为"对面"，如：there is a school just across the street. 其二，意为"横过"，如：he walked across the street.
afraid
［误］ i dont't afraid of him.
［正］ i am not afraid of him.
［析］ 要注意"害怕"afraid一词在英语中不是动词，而是形容词，要与be动词连用。
after
［误］ two weeks after he left.
［正］ two weeks later he left.
［正］ he left after two weeks.
［析］ 要表达"在多少时间之后"，英语中有两种表达法，即：用later时，要时间在前，如three hours later; 而用after时要时间在后，如after three hours.
［误］ my father will be back after a few hours.
［正］ my father will be back in a few hours.
［析］ 受中文的影响，这个介词常常被误用。当你要表达在一段时间内某个动作可以完成时，一定要用in，而不能用after，因为after是指在某一时间之后。例如：this work will be done in two days. 即表明在两天内这一工作一定会做完。而如用了after，即表示在两天之后，完成的时间是不确定的。
after behind
after多用于表示顺序的前后，如：she walked in the line after tom. 或用来表示"追赶"，表示一种动态，如：he ran after mary. 而behind多用于强调先进与落后，如：she is much behind the other girls in sewing. 或者用于表达"迟于"，如：the train was ten minutes behind the time table. 或者与表示静态的动词连用，如：she hid herself behind the flowers.
afternoon
［误］ he worked very hard in a hot afternoon.
［正］ he worked very hard on a hot afternoon.
［析］ 习惯用的词组in the afternoon, 如果加入任何修饰词后其前面的介词in都要改为on，不论其修饰词在前还是在后，如：he swam in this river on the afternoon of june lst. 又如：are you free on sunday afternoon?
against
［误］ he against me.
［正］ he is against me.
［析］ 要注意against意为"反对"，但它在英文中却不是动词，而是介词，如要讲反对某事或某人时则要加动词be, 如：he is against somebody/something.
against for
against意为"反对"、"不赞成"；而for则意为"同意"，为其反意词。如：are you for or against the plan?
age
［误］ he is twenty years old of age.
［正］ he is twenty.
［正］ he is twenty years old.
［正］ he is at the age of twenty.
ago
［误］ tom's father has been dead five years ago.
［正］ tom's father died five years ago.
［析］ ago意为由说话时算起，若干时间以前。它只能和一般动词过去时连用，而不要与完成时连用。
［误］ yesterday i met a friend. we didn't see each other for a long time since we left the college twenty years ago.