Step1 : Read the following sentences and try to sum up the usage of when,where and why.
1. I’ll never forget the day when I joined the league.
2. The house where Lu Xun once lived has become a place of interest.
3. The reason why she looks unhappy is quite clear.
先行詞是地點，引導詞就用where.
先行詞是reason，引導詞就用why.
Step 2 Practice:
Please fill in the blanks by using when,where and why.
1. This was the moment ________ Spielberg’s career really took off.
2. Chuck survives the air crash and lands on a deserted island ______there are no people.
3. The reason ______ Steven Spielberg could not go to the Film Academy was that his grades were too low.
4. I often thought of my childhood, ____ I lived on a farm.
5. Do you know the reason ____ he was late?
6. Winter is the time of year ____ the days are short and nights are long.
7. The primary school__________ I studied in my childhood had very little equipment
8. This is the place __________ we had a good time.
Key :when where why when why when where where
Sum up:
when在定語從句中作時間狀語,常常修飾表示時間的名詞如time,day,year,hour等。
where在定語從句中作地點狀語，常常修飾表示地點的名詞，如 place,room,house,square等。
why在定語從句中作原因狀語，常常修飾表示原因的名詞 ，如reason等。Step3: Read the following sentences and try to figure out the different usage of italic words.
1. I’ll never forget the day on which I joined the league.
2. This was the moment at which Spielberg’s career really took off.
3. The house in which Lu Xun once lived has become a place of interest.
4. Chuck survives the air crash and lands on a deserted island on which there are no people.
5. The reason for which she looks unhappy is quite clear.
Sum up :關係副詞when ， where ，why 相當於介詞+ 關係代詞（which）.
介詞的選擇由前面的先行詞或者從句中的謂語動詞來決定。
Step 4：practice：
1. Is this the library ____________ you borrow books?
2. This is the room _____________ I lived.
3. I don’t know the reason______________he haven’t come today.
4. Tom still remembers the days ______________they lived in Tianjin.
5. I still remember the date _________ I went to Nanjing for the first time.
6. The primary school ____________I studied in my childhood had very little equipment.
7. The day _____________ I met him first was the first of May on the Great Wall.
8. The reason ____________ it should be so is now clear. I don't need to explain it once more..
key: from which ,in which,for which,in which,on which, at which,on which,for which
Step 5: Please read the following sentences carefully and fill in the blanks
1. I will never forget the day ___________________ I first went to school.
2. I will never forget the day _________________ we spent in Beijing.
3. The house __________________ we visited is being repaired now.
4. The house _______________ Luxun once lived is being repaired now.
5. Is this the factory _________________ we visited last week?
6. Is this factory ________________ we visited last week?
7. Is this the factory ________________ his father works?
8. She won’t forget the days ______________she spent on the island.
9. She won’t forget the days _______________they stayed together.
10. She still remembers the year __________________ she found her first job.
11. She still remembers the year ____________she spent in Jining.
12. Is this the room _____________ you cleaned last time?
13. Is this the room _______________ we lived before?
14. This is the garden __________________ they stayed for a night.
15. This is the garden _____________ they visited last time.
16. Is this the room ___________________ we spent our childhood?
17. I still remember the date ___________ I went to Nanjing for the first time.
18. There are many long rivers in China_____ the Changjiang River is the longer
key : 2 6 the one e 8that 9 when10when 11that 12that13where 14where15that16where17when18among which
Sum up :
先行詞是表時間地點和原因的名詞時，從句中缺少賓語則用that 或which引導，that 或which在從句中充當賓語；從句中不缺少賓語則用when ，where， why或者相應的介詞＋which引導，在從句中充當狀語。
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