介詞和非限制定語從句
定語從句，一個(gè)簡單句跟在一名詞或代詞后(先行詞)進(jìn)行修飾限定，就叫做定語從句。下面是小編為大家提供的關(guān)于介詞和非限制的定語從句，內(nèi)容如下：
非限定性定語從句：
意義：
非限定性定語從句起補(bǔ)充說明作用，缺少也不會(huì)影響全句的理解。在非限制性定語從句的前面往往有逗號(hào)隔開，如
(1)The house,which I bought has a lovely garden. 我買的房子帶著個(gè)漂亮的花園。
(2)This novel, which I have read three times, is very touching. 這本我已經(jīng)讀過三遍的小說很感人。
1.非限定性定語從句可將整個(gè)主句作為先行詞, 對(duì)其進(jìn)行修飾,這時(shí)從句謂語動(dòng)詞要用第三人稱單數(shù)，例如：
(1)He seems not to have grasped what I meant, which greatly upsets me.他似乎沒抓住我的.意思，這使我心煩。
(2)Liquid water changes to vapor, which is called evaporation. 液態(tài)水變?yōu)檎羝�，這就叫做蒸發(fā)。
2. 在非限定定語從句中，有時(shí)as也可用作關(guān)系代詞，若as在從句中作主語，其引導(dǎo)的句子可以放在句首，也可以放在句中。例如：
(1)The boy has as much progress as we had expected. 正像我們所預(yù)料的那樣，這個(gè)男孩取得了大的進(jìn)步。
(2) As everyone knows ,China is a beautiful country with a long history . 每個(gè)人都知道，中國是一個(gè)有著悠久歷史的美麗國家。
3. 在非限定性定語從句中，不能用從句做主語
(1)The boys ，who are playing football ，are from Class One. 在踢足球的男孩們是一班的。
(2)I helped an old man ，who lost his way ，yesterday . 昨天，我?guī)椭艘粋�(gè)迷路的老人。
介詞的正確選擇：
1. 根據(jù)后面動(dòng)詞和介詞的搭配關(guān)系選擇。如：
�、賂his is not the book of which the teacher spoke in class. (speak of 意為“談?wù)摗�，相�?dāng)于talk about)
�、赥he two things of which they felt proud were Jim’s gold watch and Della’s hair. (be / feel proud of 為固定短語，意為“以……自豪”。)
2. 根據(jù)前面的名詞的搭配關(guān)系選擇。如：
�、買’ll never forget the day on which I first met him. (表示具體的某一天，介詞用on)
�、赥he boy pointed to the direction in which he would run. (“朝……方向”，介詞用in)
3. 有時(shí)需同時(shí)考慮動(dòng)詞和介詞的搭配關(guān)系及介詞和名詞的搭配關(guān)系。如：
The clever boy made a hole in the wall, through which he could see what was happening inside the house.
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