忌“多”—— 忌在定語從句中加入多余的賓語，如：

a . 誤： Theemail that (which) I

received it yesterday was from Dr. Smith .

正： The email that (which) I received yesterday was from Dr .Smith .

b.誤：Are these the words you

wrote them just now?

正：Are these the words you wrote just now?

簡析：例a中誤句的that(which)在從句中做received的賓語，it是多余的詞。 例b中誤句的關(guān)系代詞that (which)已經(jīng)被省略， that(which)作wrote的賓語，them屬于多余，應(yīng)該去掉。

忌“漏”—— 忌遺漏在定語從句中做主語的關(guān)系代詞，如：

a. 誤：This is the thief stole my car.

正：This is the thief who / that stole my car.

簡析：應(yīng)該在句中的thief后加上who / that，關(guān)系代詞who / that在從句中做主語。

b. 誤：The boy often comes late to school was ill last week.

正：The boy who / that often comes late to school was ill last week.

簡析：在boy 后面加上who / that，這里who / that在定語從句中做comes的主語。

忌“誤”—— 忌在定語從句中謂語動(dòng)詞的單、復(fù)數(shù)誤用，如：

a. 誤：Those who has got the apples can leave here now.

正：Those who have got the apples can leave here now.

簡析：句中的who指代those， 從句中謂語應(yīng)用復(fù)數(shù)形式，所以has應(yīng)該改為have。

b. 誤：She is one of the girl students who is good at swimming.

正：She is one of the girl students who are good at swimming.

簡析：句中who指girl students，句子的意思是“她是擅長游泳的女學(xué)生之一”，故謂語動(dòng)詞is應(yīng)改為are。

忌“重”—— 忌在定語從句中介詞重復(fù)使用，如：

誤：The flat where Mrs Black lives in is mine.

正：The flat where Mrs Black lives is mine.

或The flat （which）Mrs Black lives in is mine.

簡析：誤句中的where = in which，再加上介詞in，顯然是重復(fù)的。

忌“混”—— 忌在定語從句中關(guān)系代詞（which / that）與關(guān)系副詞(when / where)混用，如：

誤：I’ll never forget the day when we spent together.

正：I’ll never forget the day which / that we spent together.

簡析：誤句中when應(yīng)該改為which / that， 因?yàn)閣hich / that在從句中做spent的賓語，而when做從句的狀語。