Viết lại câu Sao cho nghĩa không đổi
1. Mrs An didn' t drink coffee when she was young but she likes it now
-Mrs An didn' t use .........................
2. I got up late last year, but now i get up early
- I used ........................
3. Two years ago, my brother often played chess very well but now he doesn't
- My brother ...................
4. My father usually played soccer, but now he doesn' t any more
- My father used ........................
5. When did you begin to study English
- How long ...........................
6. How long have you studied medicine
- When ..................
7. When did you start to learn English
- How long ...................
8. The last time we ate this kind of food was in January
- We haven't .....................
9. Hoa has written to me since she moved to London
- Hoa started .................
1. Mrs An didn' t drink coffee when she was young but she s it now.
-Mrs An didn' t use to drink coffee when she was young.
2. I got up late last year, but now i get up early.
- I used to get up late last year.
3. Two years ago, my brother often played chess very well but now he doesn't .
- My brother used to play chess very well two years ago.
4. My father usually played soccer, but now he doesn' t any more .
- My father used play soccer.
5. When did you begin to study English?
- How long have you studied English?
6. How long have you studied medicine ?
- When did you begin to studied medicine?
7. When did you start to learn English?
- How long have you learnt English?
8. The last time we ate this kind of food was in January.
- We haven't eaten this kind of food since January.
9. Hoa has written to me since she moved to London.
- Hoa started to write to me since she moved to London.
~~Good luck~~
\(\left(1-\frac{1}{2}\right)\left(1-\frac{1}{3}\right)\left(1-\frac{1}{4}\right)...\left(1-\frac{1}{2012}\right)\)
\(=\frac{1}{2}.\frac{2}{3}.\frac{3}{4}.\frac{4}{5}...\frac{2010}{2011}.\frac{2011}{2012}\)
\(=\frac{1.2.3.4...2010.2011}{2.3.4.5...2011.2012}\)
=\(=\frac{1}{2012}\)