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2
He is more intelligent than I am.
My friend did the test more carefully than me.
Chuc is more beautiful than I am.
A lion is more dangerous than an elephant.
3- you must study hard in school.
- she mustn't say that with her teacher.
- you must study ENglish better.
- you must do your homewwork.
-You mustn't using phone in class
còn phần kia tự làm nhá
~Rinfu~
1. Today is hotter than yesterday.
➔ Yesterday was __not as hot as today________________________.
2. No one in her team is more beautiful than Salim.
➔ Salim is ___the most beautiful girl in her team____________________________.
3. No house in my city is higher than his house.
➔ His house is ____the highest house in my city________________________.
4. Lan is the most intelligent in her class.
➔ No one in her class ____is as intelligent as Lan___________________.
5. My new house is bigger than the old one.
My old house is smaller than my new one
Bài tập 3: Tìm và sửa lỗi sai (nếu có) các câu dưới đây:
1. This is the more wonderful book she has ever read. more => most
2. No mountain in the world is the biggest than Everest. => the biggest => bigger
3. Bill Gate is the richer people in the world. richer => richest
4. The bed room is biggest than the kitchen one. biggest => bigger
5. One of the greater football players in Vietnam is Quang Hai. greater => greatest
Ta có: 1/22< 1/1.2=1-1/2
1/32<1/2.3=1/2-1/3
..............................
1/1002< 1/99.100=1/99-1/100
Do đó: 1+1/22+1/32+...+1/1002< 1+1-1/2+1/2-1/3+....+1/99-1/100
=> 1+1/22+1/32+....+1/1002<1+1-1/100=2-1/100<2
nên 1+1/22+1/32+....+1/1002<2
Vậy 1+1/22+1/32+...+1/1002<2
1. bigger - the biggest
2. hotter - the hottest
3. sweeter - the sweetest
4. few - the fewest
5. less - thee least
6. more comfortable - the most comfortable
7. more important - the most important
8. expensive - the most expensive
9. better - the best
10. father/further - the farthest/the furthest
ADJ/ADV | So sánh hơn | So sánh nhất |
1. Big | bigger | biggest |
2. Hot | hotter | hottest |
3. Sweet | sweeter | sweetest |
4. Few | fewer | fewest |
5. Little | more little | the most little |
6. Comfortable | more comfortable | the most comfortable |
7. Important | more important | the most.. |
8. Expensive | more expensive | the most.. |
9. Good | better | the best |
10. Far | more far | the most far |
Ta có: S=20+21+22+...+22010
2S=2.(20+21+22+...+22010)
2S=21+22+23+...+22010+22011
- S=21+22+23+...+22010+20
____________________________________
S=0+0+0+...+0+22011-20
=>S=22011-20=22011-1
=>S<22011
Bài 1 :
\(S=\frac{2}{1.2.3}+\frac{2}{2.3.4}+...+\frac{2}{2009.2010.2011}\)
\(=\frac{1}{1.2}-\frac{1}{2.3}+\frac{1}{2.3}-\frac{1}{3.4}+...+\frac{1}{2009.2010}-\frac{1}{2010.2011}\)
\(=\frac{1}{1.2}-\frac{1}{2010.2011}<\frac{1}{2}\)
Vậy \(S<\frac{1}{2}\)
Bài 2:
Làm nhiều rồi vào trong chỗ góc học tập của tớ mà coi
THANKS BN NHÌU