sao lại 7/2

2³⁰⁰ và 3²⁰⁰

Ta rút thử thành 2³ và 3²

2³ = 2.2.2 = 8

3² = 3.3 = 9

Vì 2³ < 3² nên 2³⁰⁰ < 3²⁰⁰

Rewrite:

1. He often played the piano

=> ...He used to play the piano.

2. Mary often stays at home on Sunday

=>Mary..used to stay at home on Sunday...

3. Maryam usually plays the piano at night

=> Maryam..used to play the piano at night.

4. We no longer write to each other

=> We..used to write to each other..

5. They often went to VT at weey

=> They .used to go to VT at weey...

6. Mary often writes to me

=> Mary..used to write to me.

7. She doesn’t copy her friends test no more

=> She.used to copy her friends test ..

8. He drank wine a lot but now he didn’t

=> He ..used to drink wine a lot..

9. We played soccer together when we were young

=> We..used to play soccer together when we were young..

n ko tồn tại

bài 1

1.when I come last night,my parents(watch) were watchingTV.

2....Has..she(finish) finishedher essay yet?

3.my little sister enjoys(listen) listening to english news on the radio.

4.she asked her father wether he(can) couldplay chess.

5.he is used to(stay) stayingup late every night.

bài 2

1.I don't know her telephone numbers

=>I wish I knew her telephone numbers

2.when does your school vacation start

=>she asked me whn my school vacation started

3.althought she is ill,she doesn't see the doctor

=>despite of her illness , she doesn't see the doctor

4.my father started to give up smoking 2years ago

=>my father has given up smoking for 2 years

5.nobody finished their exercises on time

=>their exercises weren't finished on time

Like other languages, English is always changing, but it changes very slowly. People invent new words, borrow words from other languages and change the meaning of the words as needed. For example, the English word "byte" was invented by computer specialists in 1959. The word "tomato" was borrowed from Nahuati, an American Indian language spoken in Mexico. The word "meat" once reffered to food in general. People learn English as well as languages by listening, copying what they hear, and using the language. Most school children learn their first language easily and sometimes other languages as well.

1. Does English change very quickly ?

=> No , it doesn't .

2. Are some English words borrowed from other languages ?

=> Yes , they are

3. What language was the word “tomato” borrowed from ?

=> The word "tomato" was borrowed from Nahuati, an American Indian language spoken in Mexico

4. In what way do people learn English ?

=> People learn English as well as languages by listening, copying what they hear, and using the language

5. When was the word “byte” invented?

=> The English word "byte" was invented in 1959

Quãng đường ô tô đã đi chiếm:

        \(\frac{1}{7}+\frac{2}{7}=\frac{3}{7}\)(quãng đường)

Quãng đường ô tô phải đi là:

        120 : 3 x 7 = 280 (km)

                Đáp số: 280km

Hiệu của 2 số đó là: 9x2+1=19 (số 1 là khoảng cách)

Số tự nhiên thứ nhất là : (2011 - 19) : 2 = 996

Số tự nhiên thứ hai là : (2011 + 19) : 2 = 1015

                          Đáp số: Số T1:996

                                        Số T2:1015

fill in the blank witly one suitable preposition .
1. The music is too loud . Could you till it __up___ a little
2. They read the news__from__the Internet .
3. Ha Noi vill have temperatures ___between____ 23°C and 27°C
4. Why don ' t you bring __with __an umbrella ?
5. you shouldn’t laugh__at_____disabled
6 . The earthquake___in_ Kobe __in__ 1995 killed a large number of people .
7 . A tornado looks __like__ a funnel .
8. Tornadoes can suck __into__anything that is _on___their path
9 . I agree __with __ my mother about most things .
10 . Hurricane Andrew swept through southern Florida __on__August 1992