... F
1
F
2
cos
φ
()
+=
From the figure,
tan
θ
()
F
1
sin φ
()
F
2
F
1
cos
φ
()
+
=
Problem 2-18
If the tension in the cable is
F
1
, determine the magnitude and direction of the resultant force acting
on the pulley. ... 2-22
Determine the magnitude and direction of the resultant
F
R
=
F
1
+
F
2
+
F
3
of the three forces
by first finding the resultant
F'
=
F
1
+
F
2
and then forming
F
R
= ... deg=
Problem 2-43
Determine the magnitude and direction, measured counterclockwise from the positive x'
axis, of the resultant force of the three forces acting on the bracket.
Given:
F
1
300...
... to live in a snake.
14. My brother managed to kill the snake just at the time when I were almost exhausted.
Supply thecorrectform of the verbs
1. Cats could fly if they (have) wings.
2. If ... a snake.
14. My brother managed to kill the snake just at the time when I (be) had been almost
exhausted. If he (be) had been a little late, I (kill) would have been killed by the snake.
15. ... (not,want) to live in a snake.
14. My brother managed to kill the snake just at the time when I (be) almost exhausted. If
he (be) a little late, I (kill) by the snake.
15. Had I know you were ill,...
...
FORMS OF VERBS
Example
3 basic forms of verbs : The infinitive to - infinitive ( Vto ) to go
bare - infinitive ( Vo ) go
The gerund ( V-ing ) going
The participle ... would rather , had better , )
- Dùng trong cấu trúc :
(V = Make , let
Feel , hear , see , watch , smell ( động từ cảm quan ) )
Eg : Nothing can make him cry
I saw him get into the car ... easy , dangerous , impossible , wonderful , lovely , important , .
Eg : Im very delighted to hear the news .
Its dangerous to go out at night alone .
- Đợc dùng sau một số động từ nh : ()
...
... puzzles.
a. mathematics – mathematician – mathematic b. mathematician – mathematic – mathematical
c. mathematics – mathematician – mathematical d. mathematic – mathematician – mathematical
4. ... well. Then he saw the dead body of a huge wolf. He realized that Gelert had
his son’s life by fighting and killing the wolf. The was horrified at the
mistake he had made and when he buried the ... In the evening when the prince
from hunting he saw that his was in a terrible mess. The furniture
been knocked over and there was blood on the walls. He could not find his baby son.
Then...
... an unpleasant experience at the weekend.
What (happen) exactly?
4. He (light) a cigarette and (walk) to the window.
5. My clothes are not in the room. They (take) them away.
6. "Good night. ... since.
4. You (be) to the laboratory this week?
5. "You (find) the key which you (lose) yesterday?" "Yes, I (find) it the
pocket of my other coat"
6. I (see) him in the library today. ... through with my business.
8. He (not go) forty yards in the direction of Piccadilly when he (meet)
Mary.
9. We've lost the camera. If we(lock) the car window, we (not give) them
the opportunity...
... One of my teachers to play the guitar.
10.Were you able yesterday afternoon?
2.
What is theCorrectForm of the Verb?
Many of these verbs need to be changed. Read the sentence, decide what the ... Verb?
Many of these words need to be changed. Read the sentence, decide what the answer should be,
then click on the word to see the answer.
1. I have often a car by myself.
2. My best friend ... Yesterday I swimming with my younger brother.
6. My mother usually shopping twice a week.
7. My mother to sleep an hour ago
8. If you tomorrow, I will, too.
9. My sister to school at eight....
... questions.
16. One of the boy admitted…………… (break) the window.
17. The boy’s father promised……………(pay) for the window to be repaired.
18. The baby began……………(cry) in the middle if the night.
19. I ... VERD FORM
1. They denied …………… (steal) the money.
2. They decided ………… (steal) the money.
3. I remembered ………… (lock) the door when I left but I forgot ………. (shut) the
windows.
4. ... make progress.
23. I rang to the doorbell but there was no answer. Then I tried…………….(knock) on
the door, but there was still no answer.
24. Can you help me ………… (get) the dinner ready?
25. Why...
... Complete these sentences with proper nouns corresponding to the verbs provided:
1. Farmers are happy because they have new ___________ system.
2. She was horrified by all the_ _________ on the beach.
3. ... throughout the world.
4. The paintings were in an excellent state of_____________.
5. Please give the table mats a quick ________________.
6. The scientists talked about the _____________of the coastline ... INFINITIVE, TO INFINITIVE AND GERUND
I. Supply thecorrectform of the verbs in brackets:
1. I hope (have)___________ a job.
2. She had to ask the boys (stop)___________(make)____________noise.
3....
... I. WORD FORM
1. He is a famous……………….(correspond)
2. She was really ……… by the beauty of the city. (impress)
3. Hanoi people are very………………. (friend)
4. Their ………… made me happy. ... Your mother (cook)……………very well, doesn’t she?
8. Do you enjoy (meet ) …………… people from other countries?
9. She practice (speak) ……………….English every day?
10. They used (play)…………….soccer in the ... company.(design)
14. Her clothes look very modern and …………(fashion)
15. Some designers have …………… the ao dai by printing lines of poetry on it.(modern)
16. She made a deep…………on the members of her class....
... days.
GIVE THECORRECTFORM OF THE VERBS IN BRACKETS
1.Peter < not go > to school yesterday. I just <see> him at the school-gate.
2.Be careful ! The teacher <look> at you.
3.They ... ill.
118.When the teacher entered, the students <talk>.
119 .The Earth <move> around the Sun.
120.If the train arrives on time, we <come> back home before 8 o’clock.
121.They <do> their ... <walk> on the pavement.
31 .My brother is familiar with <play> this game.
32 .The new school-year <start> two weeks ago.
33 .My grandmother <watch> TV every night.
34.They already...
... và di tích nằm phía nam , có hai khu C1 và C2
http://www.dulichachau.com/Ban/Thanh+dia +My+ Son/thanhdiamyson/
Thánh địa Mỹ Sơn
12/1999
Mỹ Sơn thuộc xã Duy Phú, huyện Duy Xuyên, cách thành phố ... Phần trên cùng là
hình người dâng hoa trái theo nghi lễ hoặc hình cây lá, chim muông, voi, sư tử động vật gần gũi
với tôn giáo và cuộc sống con người.
Theo các nhà nghiên cứu tháp Chàm cổ, nghệ ...
Tháp chính có hai cửa theo hướng đông tây , ở mỗi cửa có 8 bậc cấp để đi lên , ở mỗi cửa đều có
vòm cuốn
Trong Thánh địa Mỹ Sơn có hai ngọn đồi , chúng nằm đối diện nhau theo hướng đông – tây...
... molecular mass than the wild-type protein, and
either the single or double mutants. This lower molecu-
lar mass form appeared to be the same size as the
unglycosylated form of the wild-type protein ... mutant
forms of HFE and incubated the cells in the presence
and absence of tunicamycin. Drug treatment resulted
in the accumulation of an unglycosylated lower molec-
ular mass form of the wild-type ... the
wild-type or mutant proteins, and incubated the cells
in the presence or absence of tunicamycin. Drug
treatments resulted in the accumulation of forms of
the mutant proteins that were of lower apparent
molecular...