定語從句是高中英語語法的重點，以下是小編分享的高一定語從句知識點講解，一起來閱讀吧！
一、定語從句的結構：
在複合句中，修飾某個名詞或代詞的句子（做這個名詞或代詞的定語）叫定語從句，定語從句一般放在被修飾的名詞或代詞後面，被修飾的名詞或代詞叫做定語從句的先行詞，它與定語從句之間要有一個詞連線，這個詞指代先行詞的內容叫做關係詞（關係代詞或關係副詞：that, which, who, whose, when, where, why）。先行詞在定語從句中充當主語，賓語，時間，地點，原因狀語。
結構：先行詞+關係詞+定語從句。
1. There she saw a wall of water that was quickly advancing towards her.
2. In Japan, someone who sees another person making the gesture will think it means money.
3. A theme park is a collection of rides, exhibitions or other attractions that are based on a common theme.
4. The park has a conservation center that helps protect marine animals and their habitats in the rivers and coastal waters of Asia.
5. Visitors can go on exciting rides where they can feel what it is like to do the things they have seen their heroes do in the movie.
6. Oprah Winfrey is a black woman whose rise to fame is an inspiring story.
二、限定性定語從句
1. that即可代表事物也可代表人，which代表事物；它們在從句中作主語或賓語，that在從句中作賓語時常可省略關係詞，which在從句中作賓語則不能省略。而且，如果which在從句中作“不及物動詞＋介詞”的介詞的賓語，注意介詞不要丟掉，而且介詞總是放在關係代詞which的前邊，但有的`則放在它原來的位置
2. which作賓語時，根據先行詞與定語從句之間的語義關係，先行詞與which之間的介詞不能丟
3. 代表物時多用which，但在帶有下列詞的句子中用that而不用which，這些詞包括all, anything, much等，這時的that常被省略
4. who和whom引導的從句用來修飾人，分別作從句中的主語和賓語，whom作賓語時，要注意它可以作動詞的賓語也可以作介詞的賓語
5. where是關係副詞，用來表示地點的定語從句
6. when引導定語從句表示時間
〔注〕值得一提的是，表示時間“time"一詞的定語從句只用when引導，有時不用任何關係代詞，當然也不用that引導
By the time you arrive in London, we will have stayed there for two weeks.
I still remember the first time I met her.
Each time he goes to besiness trip, he brings a lot of living necessities, such as towers, soap, toothbrush etc.
7. whose是關係代詞，修飾名詞作定語，相當於所修飾成分的前置所有格
8. 當從句的邏輯主語是some, any, no, somebody, anybody, nobody, something, anything, everything或nothing時，常用there is來引導
