例如 This is the house which we bought last month 这是我们上个月买的那幢房子。(限制性) The house, which we bought last month is ver nce 这幢房子很漂亮,是我们上个月买的。(非限 制性) (Student( Times
例如： This is the house which we bought last month. 这是我们上个月买的那幢房子。（限制性） The house, which we bought last month, is very nice. 这幢房子很漂亮，是我们上个月买的。（非限 制性）
2.非限制性定语从句还能将整个主句作为先 行词,对其进行修饰这时从句谓语动词要用第三 人称单数,例如 He seems not to have grasped what i meant, which greatly upsets me. 他似乎没抓住我的意思,这使我心烦。 Liquid water changes to vapor which is called evaporation. 液态水变为蒸汽,这就叫做蒸发。 (Student( Times
2. 非限制性定语从句还能将整个主句作为先 行词, 对其进行修饰, 这时从句谓语动词要用第三 人称单数，例如： He seems not to have grasped what I meant, which greatly upsets me. 他似乎没抓住我的意思，这使我心烦。 Liquid water changes to vapor, which is called evaporation. 液态水变为蒸汽，这就叫做蒸发
3.引导非限制性定语从句的关系代词有as, which,who,whom, whose等,作定语从句的 主语、宾语、表语及定语。关系副词有when, where等,作定语从句的状语。关系代词和关系 副词在定语从句中一般不能省略。 SharAn tud lent( Times
3. 引导非限制性定语从句的关系代词有as， which，who，whom，whose等，作定语从句的 主语、宾语、表语及定语。关系副词有when， where等，作定语从句的状语。关系代词和关系 副词在定语从句中一般不能省略
4.as引导非限制性定语从句时,可以代主句的全 部或部分内容。常表说话人关于说话的依据、 态度、评论、看法等。有“正如、像”等意思 定语从句可以置主句句首、句中或句末。as 后常接 expect,know, report,say,se等 动词的主、被动语态句 SharAn tud lent( Times
4. as引导非限制性定语从句时，可以代主句的全 部或部分内容。常表说话人关于说话的依据、 态度、评论、看法等。有“正如、像”等意思。 定语从句可以置主句句首、句中或句末。as 后常接expect，know，report，say，see等 动词的主、被动语态句
As is known to everybody, the moon travels round the earth once every month 众所周知,月球每个月绕地球一圈。 Mike, as we expected, attended the meeting 像我们所期望的那样,迈克参加了会议。 He wasnt unconsicious, as could be judged from his eyes 他并未失去知觉,这从他的眼神可以判断 出来 (Student( Times
As is known to everybody, the moon travels round the earth once every month． 众所周知，月球每个月绕地球一圈。 Mike, as we expected, attended the meeting． 像我们所期望的那样，迈克参加了会议。 He wasn’t unconsicious, as could be judged from his eyes． 他并未失去知觉，这从他的眼神可以判断 出来