限定语从句and非限定语从句- 限定：…的
- This is the house which we bought last month.
- 这是(我们上个月买的)房子。
- 非限定：附加说明先行词，去掉不影响主句含义，that和why不可引导
- The house, which we bought last month, is really nice.
- 这房子，(我们上个月买的)，是真的好。
- 【总结】非限定从句，解释先行词，去掉无影响，不可用that/why
as和which引导- （1）在限定性定语从句中：名词前有 such 和 the same 时，只能用 as
- （2）在非限定性定语从句中：都可指代整个主句，相当于and this或and that
- （3）as放句首/句中，which只放句中
- 例：They won the game, as/which we had expected.（非限定）
- As we had expected, they won the game.（非限定）
- 正如我们期望，他们赢得了比赛。
【总结】as和which：- 【同】引导限定/非，代非限主句
- 【异】①正如…这样，限定仅as；②as放句首/句中，which只放句中
- 练习
which VS that定语从句- 下列情况只能用that，不能用which：
- （1）先行词：人＋物
- 例：They talked about the teachers and the schools(that) they knew.
- （2）先行词：不定代词/被不定代词修饰，如：anything, nothing, the one, all, much, few, any, little
- 例：Have you got anything(that) belongs to me?
- （3）序数词、形容词最高级＋先行词
- 例：This is the bestplace (that) I've ever visited.
- （4）the only, the very, the next, the last＋先行词
- 例： The onlything that could be done is to find our way home.
- （5）主句是who/which特殊疑问句，用that避免重复
- 例：Whois the person that is standing at the gate?
- 【总结】仅用that（⑤点）：任何；人＋物；最好的·第一；唯一；避重复
- 定语从句中，以下情况只能用which，不能用that：
- （1）引导非限定从时
- （×）The cat, that is four years old, is really famous.
- （√）The cat, which is four years old, is really famous.
- （2）介词后which
- We depend on the land from which we get our food.
- We depend on the land that/which we get our food from.
- 【总结】仅用which（②点）：引导非限定，介词后which
定语从句VS同位语从句- 区分方法：
- 1、“同位语”附加，限内容“定语”
- 同位语从句=先行词（…是…）
- The fact (that he succeeded) pleased everybody.（同位语从句）
- 这个事实(是他成功)使每个人都很高兴。
- 定语从句：定义先行词（…的）
- The fact (that we talked about) is very important.（定语从句）
- (我们谈论的)事实是很重要的。
- 2、“先行”是“从句”，通顺同位语
- 去掉连接词，先行词＋be动词＋从句，句子通顺是同位语从句，语义残缺是定语从句
- 1.The news (that he will come back) is true.（同位语从句）
- The news is he will come back.消息是他会回来。
- 2.The news (that he told me) is true.（定语从句）
- （×）The news is he told me.消息是他告诉我…？
定语从句解题- 方法
- 1.找到先行词
- 2.放到从句中
- 3.缺啥选代词
- 练习
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