文档介绍：易错点一:关系代词和关系副词的混用
例 'll never forget the days when I spent in New York with you. 例 2. rn never forget the days which I visited New York with you. 析：例1中的when应改为 which或that ；例2中的which应改为 when . 区分关系代词和关系副词的关键是看它们在定语从句中所充当的成分。如果定语 从句中缺少主语、宾语，就应考虑使用关系代词，如例1 ；若定语从句中缺少状 语，就应考虑使用关系副词，如例2.
易错点二：固定句式出差错
例 3. Mary is so lovely a girl as everybody loves her.
彳列 4. Mary is so lovely a girl that everybody loves.
析：例3中的as应改为that ；例4中的that应改为as.
so...as或so...that为固定句式，前者为as引导的定语从句，as在定语从句中作 宾语或主语，如例4 ；后者为that引导的结果状语从句，该从句的成分是完整的, 不缺少主语或宾语，如例3 .类似的固定句式还有the same... as (that), such...as , as...as 等。
易错点三：主谓不一致
彳列 5. Tom is one of the students who likes swimming.
例 6. Tom is the only one of the students who like swimming.
析：例5中的likes应改为like ；例6中的like应改为likes.
在“ one of +复数名词+定语从句”结构中，定语从句的先行词是复数名词，故 谓语动词要用复数形式，如例5 ；在"the (only) one of +复数名词+定语 从句”结构中，先行词是one ,而不是复数名词，故谓语动词要用单数形式，如 例6
.易错点四：与强调句型及其他句型的混合
例 7. Was it in the shop that you bought the recorder that you lost your pen?
例 8. You'd better make a mark at where you have any questions.
析：例7中第一个that应改为where ；例8中应去掉at.
例7为带有定语从句的强调句，you bought the recorder为定语从句，其引 导词应用where ,后面第二个that才是强调句中的that ,此句可还原为： You lost your pen in the shop where you bought the recorder .仞！J 8 为 where 弓 I 导的地点状语从句。
易错点五：对先行词概念不明确
例 9. Is this library that you visited yesterday?
彳列 10. Is this the library where you visited yesterday?
析：例9中应在l