Unit 6 I like music that I can dance to教案
4. 關系代詞在句中作表語時可省略（只能用that）
she is not the girl that she was .
定語從句中關系代詞與關系副詞的選擇
1. 明確關系代詞，關系副詞在定語從句中的不同作用
關系代詞which , that , who在定語從句中作主語或在及物動詞或介詞后作賓語
關系副詞when , where, why在定語從句中作狀語，即定語從句中不缺主語、賓語，只缺時間、地點或原因狀語
2. 分析句子結構，明確句法成分
關系詞在從句中作賓語還是作狀語，關鍵取決于從句中的謂語動詞。如果定語從句中謂語動詞是及物動詞，應觀察其后有無賓語。如果沒賓語，則應考慮使用能充當賓語的關系代詞which或that。如果句子中有賓語，就考慮關系副詞when或where等
關系副詞（when , where , why ）
1. when的用法（在定語從句中做時間狀語）
i still remember the day when i first came to beijing .
we will never forget the happy time when we worked on the farm .
he came at a time when (at which ) we needed help .
2. where的用法（在定語從句中做地點狀語）
this is the house where we lived last year .
the factory where his father works is in the west of the city .
after living in pairs for fifty years , he returned to the small town where he grew up as a child .
3. why的用法（在定語從句中做原因狀語）
there are several reasons why we can’t do that .
he couldn’t give the teacher a good reason why he was late for school .
is this the reason why ( for which ) he refused our offer ?
the reason why ( for which ) she was ill is that she had eaten bad meat .
4. 比較
i’ll never forget the days that / which i spent with my teacher .
i’ll never forget the days when i worked with you .
it is the house that / which was built two years ago .
it is the house where / in which i was born .
the reason which / that he gave was an excuse .
the reason why he was late was the rain .
do you know the reason why he didn’t turn up ?
只能用that的定語從句
1. 先行詞為不定代詞all everying nothing anything little much none時或被這些詞修飾時 ，關系代詞只用that
all that can be done has been done .
2. 當先行詞被形容詞的最高級修飾時，只用that
this is the most beautiful park that i have visited .
the titanic is the most dangerous film that i’ve ever seen .
the best one that i’ll choose will be you .
3. 當先行詞被序數詞the first , the second , the last等修飾時，只用that
the first lesson that we have learned will never be easily forgotten .
this is the last class that we will have this term .
4. 當先行詞被the only , the very , the last修飾時，只用that
( some any few much no very only )
the only student that may be elected is in our class .