1.中文：那人问我他何时能到达车站。

(误)The man asked me that when he could reach the station.

(正)The man asked me when he could reach the station.(when可引导名词从句，不再使用that.)

2.中文：原因是他不知道如何去做。

(误)The reason is because he does not know how to do it.

(正)The reason is that he does not know how to do it.(because不能引导名词从句。)

3.中文：她写的信在桌子上。

(误)The letter is on the desk which she wrote.

(正)The letter which she wrote is on the desk.(定语从句通常紧跟在被修饰词后面。)

4.中文：她是几个通过考试的学生之一。

(误)She is one of the few students who has passed the exam.

(正)She is one of the few students who have passed the exam.(one of+复数名词+关系代词+复数动词。)

5.中文：圆窗户的建筑物是我们的教学大楼。

(误)The building which windows are round is our school building.

(正)The building whose windows are round is our school building.(windows是属于building的，用关系代词的所有格。)