1.The last time she had a swim was five years ago

\(\Rightarrow\)She has not a swam for five years 

=> She last swam five years ago 

=> It's ten years she didn't swim 

2. I have never met such a famous person before.

=> It is the first time I've met such a famous person.

3. They have not cleaned the streets for a week

⇒It is a week since they last cleaned the streets .

⇒They last cleaned a week ago

⇒The last time they  cleaned the streets was a week ago .

4. I have not come there for two years.

⇒I last came there two years ago.

⇒It is two years since I last came .

⇒The last time I came here was two years ago .

5. I have studied english for seven years

⇒I started studying english seven years ago .

6. The last tim i met him was two weeks ago. 

⇒I have not met him for two weeks 

⇒I last met him two week ago .

⇒It is 2 weeks since I last met him

7. She has never seen him before

⇒It is the the first time she saw him .

8. They have not gone on a picnic for many months

⇒They last went on a picnic many months ago

⇒It is many months since they last went a picnic

⇒The last time they went a picnic was many months ago

*

sorry các bạn nó bị lỗi rồi

Ko sao :))

Bg

Số giao điểm của 16 đường thẳng đã cho như trên là:

   16.15 : 2 = 120 (giao điểm)

Sửa Ta có : 6ab6 : ab = 192

=> 6000 + ab x 10 + 6 = 192 x ab

=> 6006 = 192 x ab - 10 x ab

=> 6006 = ab x (192 - 10)

=> 6006 = ab x 182

=> ab = 33

Vậy ab = 33

Hỏi nhiều quá nhỉ ?

Bg

Ta có: 6ab6 : ab = 192   (ab \(\inℕ^∗\))

=> 6000 + ab.10 + 6 = 192.ab 

=> 6006 + ab.10 = 192.ab 

=> 6006 = 192.ab - 10.ab      (192.ab - 10.ab = (192 - 10).ab)

=> 6006 = 182.ab 

=> 6006 : 182 = 33 = ab 

Vậy ab = 33

1. Has just come

2. Have driven

3. Has just finished

4. translated

5. Saw

6. Has gone

7. Swam

8. rememberred

9. read

10.have never written

11. did you have

1. Tom ( just come)__ has just come__. Do you want to talk to him?

2. This is the first time I (drive)__drove__a BMW.

3. She (just finish)_has just finished__her homework. She can go out with friends.

4. My father (translate)__translated__two pages yesterday.

5. My brother (see)__saw__him last week at Jane"s birthday party.

6. Mr.Jones (go)_went___to Australia. He is not in this country

7. Last summer i (swim)__swam__in the Red Sea

8. I (remember)__remembered___to close the door

9. I (read)_read___twenty novels last year

10. I ( never write) _have never written___any poem

11. How many lessons (you have) __have you had___today?

Bài làm:

Ta có: \(290\div\left(x-12\right)=329-75.4\)

\(\Leftrightarrow290\div\left(x-12\right)=329-300\)

\(\Leftrightarrow290\div\left(x-12\right)=29\)

\(\Leftrightarrow x-12=10\)

\(\Rightarrow x=22\)

\(\frac{290}{x-12}=319-75.4\Leftrightarrow\frac{290}{x-12}=19\)

\(\Leftrightarrow290=19x-228\Leftrightarrow x=\frac{518}{19}\)

để xem đã

vào trang cá nhân của mình đi, có cái này hay lắm, các cậu vào là sẽ biết thôi

2. Is she going to finish her report on Wednesday?                               No, she isn't.

3.Is she going to buy a present for Peter on Thursday?                        Yes, she is.

4. Is she going to meet Harry on Friday?                                               Yes, she is.

5. Is she going to have lunch with Angela on Monday?                         No, she isn't.                

6. Is she going to study for her test on Tuesday?                                  Yes, she is.

7. Is she going to the haidresser's on Saturday?                                   No, she isn't.          

1 ......Is She going to visit....her uncle on Sunday?(visit)                                        Yes, she is

2 .....Is she going to finish...........her report on Wednesday?(finish)               ....No , she isn't....

3 ......Is she going to buy .........a present for Peter on Thursday? (buy)             ...Yes , She is.......

4.........Is she going to meet..............Harry on Friday? (meet)                            ..Yes, she is..........

5 ......Is she going to have..............lunch with Angela on Monday?(have)            ....No , she isn't.......

6........Is she going to study...........for her test on Tuesday?(study)                     ......Yes , she is..........

7.......Is she going to go..............to the hairdresser's on Saturday?(go)                 .......No , she isn't .

* Dùng thì tương lai gần 

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