1、定语从句与七种易混句型巧区分定语从句关系代词的使用关系代词指代在定语从句中所充当的成分人物句子主语宾语定语whowhomwhichthatwhose关系副词的使用关系副词指代定从whenwherewhy时间地点原因完整完整完整定语从句是高中阶段的重点语法项目之一。因此，同学们有必要全面弄清其用法。定语从句从句型上讲，它与七种句式相似，十分容易混淆。为了帮助同学们分清定语从句与这七种句型的差异，现将其分类例析如下：一、定语从句与并列句的区别A.them;B.none&they;C.whom①MrLi has three daughters，none of _____
2、 is an engineer．②MrLi has three daughters，but none of _____ is a dancer．③MrLi has three daughters；_____ are doctorsCAB并列句有像and，but，so等并列连词或两个句子用分号连接，这时就不能再用引导定语从句的关系词了，它们是两个分句。二、定语从句与地点状语从句的区别A.where;Bwhere&onwhich①Rice doesn‘t grow well _____ there is not enough water②I still remembe
3、r the farm ___ my parents workedten years ago．AB定语从句有表示地点的先行词，而地点状语从句则没有；定语从句的关系词根据需要可用“介词＋which”来代替where，而地点状语从句则通常只能由where引导。三、定语从句与强调句的区别A.that;B.where①It is on the morning of May 1st _____ I metLiangWeiat the airport．②It is the factory _____MrWang works．AB强调句的结构为“Itis／was＋被强调部分＋th
4、at＋从句”。被强调部分可以是除谓语以外的任何成分，当被强调部分是人时，还可用who代替that。这一句型中，一定不能因为被强调部分是表时间或地点的词就用when或where代替that。四、定语从句与结果状语从句的区别A.thatB.as①Ihave the same computer _____ you have．②She is such a kind and funny girl _____ all of uslike to make friends with her．BA这里只讨论thesame．．．as／that和such．．．as／that两种情况）：
5、在thesame．．．as／that结构中，用as指一样的，但不是同一个事物；用that指同一物品。such．．．as／that的区别在于：as引导的是定语从句，从句不完整；而that引导的是结果状语从句，从句完整。五、定语从句与习惯句型的区别A.when;B.that①It is the first time _____ she has been in Shanghai．②It was the time _____ Chinese people had a hard life．BA①小题是一个习惯句型：Itis／wasthefirst／second…time＋t
6、hat从句。故①填that，其意为：这是她第一次在上海。②小题thetime是先行词，其后是表示时间的定语从句，故填when。六、定语从句与单句的区别A.itB.which①The mother told the lazy boy to work,_____ didn‘t help．②The mother told the lazy boy to work._____ didn‘t help．BIt含有定语从句的复合句与两个单句的主要区别在于：前者有主句，有从句，必须有关系词；而后者则是两个单独的句子，不需要任何关联词。①小题两个句子用逗号连接且没有并列连词，显然
