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\(\frac{2}{x-1}+\frac{5}{x+2}=\frac{13}{x^2+x-2}.\)
\(\Leftrightarrow\frac{2\left(x+2\right)}{\left(x-1\right)\left(x+2\right)}+\frac{5\left(x-1\right)}{\left(x+2\right)\left(x-1\right)}=\frac{13}{x^2+x-2}\)
\(\Leftrightarrow\frac{2x+4}{x^2+x-2}+\frac{5x-5}{x^2+x-2}=\frac{13}{x^2+x-2}\)
\(\Leftrightarrow\frac{7x-1}{x^2+x-2}=\frac{13}{x^2+x-2}\)
\(\Leftrightarrow7x-1=13\)
\(\Leftrightarrow7x=14\)
\(\Leftrightarrow x=2\)
1. D (V_ing ko theo sau before đc)
2. C (Nếu contact là động từ thì nó sẽ 0 bao h đi với giới từ, nhưng nếu contact đc sử dụng là danh từ thì nó có thể đi kèm với with)
3. D (Là đương nhiên vì homework là danh từ 0 đếm đc, 0 đc thêm s, cũng 0 đc dùng từ many, many chỉ dùng cho DT đếm đc)
4. C (So sánh ngang bằng, lại có động từ chính là speak-động từ thường , mà fluent là tính từ, ở đây fải dùng trạng từ ms đúng)
5. A (so+tính từ, tuy difficult là TT, nhưng a difficult lesson là DT nhé >>> phải dùng such vì such+DT)
6.a
7.d (Đoán thui, vì Q.khứ hoàn thành típ diễn thì đúng òi, vậy thì chắc but pải thành before quá -_-)
8.c
9.d (mấy cái trc V_ing thì cái sau cũng V_ing)
10. b
sai thì thuiii nhé, con ms hok lớp 7 thui aj -_-
Câu bị động: ( Passive voise )
1) Somebody has taken some of my book away.
⇒⇒ .......Some of my books have been taken away by somebody....................................................................
2) The will hold the meeting before the may day.
⇒⇒ ...............The meeting will be held before the may day............................................................
3) They have to repair the engine of the car.
⇒⇒ ..............The engine of the car has to be repaired.................................................................
4) The boys broke the window and took away some pictures.
⇒⇒ ...................The window was broken and some pictures were taken away by the boys.......................................................................
5) People spend a lot of money on advertising every day. ⇒⇒ ......................a lot of money is spent on advertising every day ....................................................................
6) The may use this room for the classroom. ⇒⇒ ........................This room may be used for the classroom..................................................................
7) The teacher is going to tell the story. ⇒⇒ ..................The story is going to be told by the teacher.
........................................................................
8) Marry is cutting the cake with a sharp knife. ⇒⇒ ...........The cake is being cut with a sharp knife by Marry.
...............................................................................
Viết lại câu
1 They have given her a bunch of flowers
→→A bunch of flowers has been given to her
2 He asked his mother " Must I go now ?"
→→He asked his mother if he had to go then
3 I want you to do this work now
→→I want this work is done now
4 They need to paint these pieces of furniture
→→These pieces of furniture need to be painted
5 Have you gone to school late before ?
→→Is this the first time you have gone to school late
6 She went out for some fresh air ( IN ORDER TO)
→→She went out in order to get some fresh air
7 Their daughter is not only pretty but also good - natured ( BOTH)
→→Their daughter is both pretty and good - natured
8 His wife wrote that letter in 3 hours (SPEND)
→→His wife spent 3 hours writting that letter
9 My father does not type as fast as he used to (USED TO )
→→he used to type faster than he does now
10 He last came back to his home village five months ago (FOR)
→he hasn't come back to his home village for five months
Bạn nào cho mk 1 ik, mk cho bn ý 3 ik luôn. Mk hứa nếu nói dối bạn có thể Báo cáo sai phạm mk.
Viết lại câu sao cho nghĩa không đổi:
1, My slow progress was due to bad teaching→→As a result.......OF BAD TEACHING, MY PROGRESS WAS SLOW...................
2, In spite of the forecast it stayed fine→→Although rain..WAS FORECASTED, IT STAYED FINE....................
3, Provided your handwriting is legible the examiner will accept your answer→→So long as the examiner..CANS READ YOUR HANDWRITING, THEY WILL ACCEPT YOUR PAPER........................
4, You can use it as long as you like, and it won't wear out→→No matter....HOW LONG YOU USE IT, IT WON'T WEAR OUT.............................
5, Although Judy was severely disabled she participated in many sports→→Despite her....SEVERE DISABILITY, SHE PARTICIPATED IN MANY SPORTS.............................
6, Their dog was so fierced that nobody would visit them→→They had....SUCH A FIERCED THAT NOBODY WOULD VISIT THEM...................................
7, Even though I admire his courage, I think he is foolish.→→Much....AS I ADMIRE HOS COURAGE, I THINK HE IS FOOLISH........................
8, Although Christopher was the stronger of the two,his attacker soon overpowered him→→Despite his..BEING THE STRONGER OF TWO, HIS ATTACKER SOON OVERPOWERED............................
9, No matter how hard I tried I couldn't open the door→→Try........AS HARD AS I MIGHT, I COULDN'T OPEN THE DOOR.......................
10, The two sides never looked likely to reach an agreement→→At no time.......DID THE TWO SIDES LOOK LIKELY TO REACH AN AGREEMENT..................
SR, NAY GIO MK PHAI HOC BAIF
- Sửa thành 'that' chứ bạn