=> Because of having an accident, these students arrived late.

1. with

2. in

3. on

4. at

1.Can I help you with your bag,Lan? 

2.We are looking forward to seeing you in June

3.Today we went on an eight-hour tour

4.When I arrived at school,it began to rain 

đây bn nha 

chúc bn hok tốt 

with

in

on

at

1.....being rich, he is very mean

2 ......being lazy, the students finish their homework

3 .......driving slowly, he caused an accident

4.........a lot of traffic jams in the city, people like to live there

--------------------------------

-Although+S+V, S+V

-Despite+V-ing/N, S+V

-Although: Mặc dù

Because and Because of

Because of having an accident, these students arrived late.

      - Because these students had an accident, they arrived late.                  Nick is often punished because he is lazy.

      - Because of being lazy ( Nick’s laziness), Nick is often punished.

The accident happened because of his being negligent in his driving.

      - Because he was negligent in his driving, the accident happened.

Karen works on Sundays because she gets paid extra.

      - Because of getting paid extra, Karen works on Sunday.

 She ate much because of her hunger.

      - Because she was hungry, she ate much.

 We didn’t go fishing because the water was rough.

      - Because of the rough water, we didn’t go fishing.

Because and Because of

Because of having an accident, these students arrived late.

      - Because these students had an accident, they arrived late.

 Nick is often punished because he is lazy.

      - Because of being lazy( Nick's laziness), Nick is often punished.

The accident happened because of his being negligent in his driving.

      - Because he was negligent in his driving, the accident happened.

Karen works on Sundays because she gets paid extra.

      - Because of getting paid extra, Karen works on Sunday.             

  She ate much because of her hunger.

      - Because she was hungry, she ate much.               

 We didn’t go fishing because the water was rough.

      - Because of the rough water, we didn't go fishing.            

giải thích chi tiết hộ mình với ạ càng chi tiết càng tốt

1. She is living in China because she got married to a Chinese.

-> She got married to a Chinese so she is living in China.

2. I am tired now because I went home late yesterday.

-> I went home late yesterday so I am tired now.

3. She did the homework last night so she gets a high score today.

-> She gets a high score today because she did the homework last night.

4. It rained yesterday so I don’t go to school today.

-> I don’t go to school today because it rained yesterday.

5. I missed the end of the film so I don’t know who the murderer was.

-> I don’t know who the murderer was because I missed the end of the film.

because: bởi vì

S + V + O + because + S + V +O

so: nên

S + V + O + so + S + V + O

#Dịch theo nghĩa rồi làm thôi :)

1.-> She got married to a Chinese so she is living in China.

2.-> I went home late yesterday so I am tired now.

3.-> She gets a high score today because she did the homework last night.

4.-> I don’t go to school today because it rained yesterday. 

5.-> I don’t know who the murderer was because I missed the end of the film.

Bài 5 hình 1: (tự vẽ hình nhé bạn)
a) Xét ΔABD và ΔACB ta có:
\(\widehat{BAD}\)= \(\widehat{BAC}\) (góc chung)
\(\widehat{ABD}\)= \(\widehat{ACB}\) (gt)
=> ΔABD ~ ΔACB (g-g)
=> \(\dfrac{AB}{AC}\) = \(\dfrac{BD}{CB}\) = \(\dfrac{AD}{AB}\) (tsđd)
b) Ta có: \(\dfrac{AB}{AC}\) = \(\dfrac{AD}{AB}\) (cm a)
=> \(AB^2\) = AD.AC
=> \(2^2\) = AD.4
=> AD = 1 (cm)
Ta có: AC = AD + DC (D thuộc AC)
      => 4   =   1   + DC
      => DC = 3 (cm)
c) Xét ΔABH và ΔADE ta có: 
   \(\widehat{AHB}\) = \(\widehat{AED}\) (=\(90^0\))
   \(\widehat{ADB}\) = \(\widehat{ABH}\) (ΔABD ~ ΔACB)
=> ΔABH ~ ΔADE
=> \(\dfrac{AB}{AD}\) = \(\dfrac{AH}{AE}\) = \(\dfrac{BH}{DE}\) (tsdd)
Ta có: \(\dfrac{S_{ABH}}{S_{ADE}}\) = \(\left(\dfrac{AB}{AD}\right)^2\)= \(\left(\dfrac{2}{1}\right)^2\)= 4
=> đpcm

Tiếp bài 5 hình 2 (tự vẽ hình)
a) Xét ΔABC vuông tại A ta có:
\(BC^2\) = \(AB^2\) + \(AC^2\)
\(BC^2\) = \(21^2\) + \(28^2\)
BC = 35 (cm)
b) Xét ΔABC và ΔHBA ta có:
\(\widehat{BAC}\) = \(\widehat{AHB}\) ( =\(90^0\))
\(\widehat{ABC}\) = \(\widehat{ABH}\) (góc chung)
=> ΔABC ~ ΔHBA (g-g)
=> \(\dfrac{AB}{BH}\) = \(\dfrac{BC}{AB}\) (tsdd)
=> \(AB^2\) = BH.BC
=> \(21^2\) = 35.BH
=> BH = 12,6 (cm)
c) Xét ΔABC ta có:
BD là đường p/g (gt)
=> \(\dfrac{AD}{DC}\) = \(\dfrac{AB}{BC}\) (t/c đường p/g)
Xét ΔABH ta có: 
BE là đường p/g (gt)
=> \(\dfrac{HE}{AE}\) = \(\dfrac{BH}{AB}\) (t/c đường p/g)
Mà: \(\dfrac{AB}{BC}\) = \(\dfrac{BH}{AB}\) (cm b)
=> đpcm
d) Ta có: \(\left\{{}\begin{matrix}\widehat{HBE}+\widehat{BEH}=90^0\\\widehat{ABD}+\widehat{ADB=90^0}\\\widehat{HBE}=\widehat{ABD}\end{matrix}\right.\)
=> \(\widehat{BEH}=\widehat{ADB}\)
Mà \(\widehat{BEH}=\widehat{AED}\) (2 góc dd)
Nên \(\widehat{ADB}=\widehat{AED}\)
=> đpcm

A = {6;12}

b: B={90;180;270}

Con đĩ này ngu chết mẹ luôn