導語：非限定性定語從句起補充說明作用，缺少也不會影響全句的理解，它與主句往往用逗號隔開，非限制性定語從句是先行詞的附加說明，去掉了也不會影響主句的意思，它與主句之間通常用逗號分開，將非限定性定語從句放在句子中間，其前後都需要用逗號隔開，下面是本站小編收集的關於非限定從句的用法以及同步練習，有興趣的可以看看。
1.非限制性定語從句不可用that引導， 在非限制性定語從句中用who(作主語) / whom(作賓語)指人，用which(作主語 / 賓語)指物， 用whose作定語(指人 / 物)。
例如：
The famous basketball star, who tried to make a comeback, attracted a lot of attention.
這位試圖打反擊的著名籃球明星吸引了眾人的關注。
The film, whose director is an old man, is very instructive.
這部電影很有教育意義， 它的導演是位老人。
2.關係代詞在非限制性定語從句中作賓語時不可省略，若指人時，只用whom，不用who。
例如：
York, which I visited last year, is a nice old city.
Please give the book to Jessica, whom we met in the hall just now.
I. 單項選擇。
1. They have again invited me to visit their country, ________ is very kind of them.
A. that B. which C. when D. where
2. ________ is known to all， water is an important kind of natural resource.
A. As B. Which C. Who D. When
3. The leader of the team is a 44-year-old Frenchman, ________ wife is also a team member.
A. who B. whom C. which D. whose
4. I'm to fly to Kunming, ________ it is warm in this season.
A. which B. as C. where D. when
5. He said he would come to my house to see me tomorrow afternoon, ________ I will have some other friends to play together.
A. when B. where C. which D. whom
II. 根據漢語，完成英語句子。
1. 屋子裡都是孩子，其中十個是那個老人自己的孫子。
The house was full of children,________________________________________________________ .
2. 我們學校有許多實驗室，其中最大的是去年建造的。
Our school has many laboratories,________________________________________________ .
3. 我去年買的那幢房子帶著一個漂亮的花園。
My house,________________________________________________ , has got a lovely garden.
4. 我們沿著村裡的大街向前走去，村民們正在那裡趕集。
We walked down the village street,________________________________________________ .
5. 一箇中年女子殺害了自己的丈夫，這令我十分恐懼。
A middle-aged woman killed her husband,________________________________________ .
參考答案:
I. 1—5 B A D C A
II. 1. ten of whom were that old man's own grandsons
2. the largest of which was built last year
3. which I bought last year
4. where the villagers were having market day
5. which frightened me very much
請把這本書交給傑西卡，就是剛才我們在大廳裡遇到的那位。
3.非限制性定語從句不可用why引導， 需用for which替代why。
例如：
None of us accepted the reason he explained, for which he was absent.
我們沒有一個人接受他所解釋的缺席的`理由。
任何一個小的語法在英語考試中都是非常重要的，常見的語法考察的內容就是單選，完形和改錯這幾個題目，所以對於語法考察的內容所佔的比例也是不小的，所以大家一定要重視。
