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All ( of ) and Both ( of )

All ( of ) and Both ( of )
When a noun is spesific(e.g , the students ), using of after all  is optional
Example :
- all of the students in my class are here
- all the students in my class are here

When a noun is nonspecific , of does not follow all
Example :
- all students must have an I.D card
- all of students must have an I.D card

Similarly , using of after both is optional when the noun is specific
- I know both of those men

When a noun is nonspecific , of does not follow both
- I know both men
- I know both of men ( incorrect )

Exercise : All ( of ) and Both ( of )
Direction : of is not necessary in any of these sentences. In the sentences in which the use of of is optional, write of in the blanks. If of is not possible because the noun is nonspecific , write -

1. all ……….. the children listened to the story
2. Almost all ………….. children like fairy tales
3. Both ……………. those books are mine
4. I bought two books. Both ……………….. books were expensive
5. Almost all …………. students study hard for exams
6. All ……………. birds have wings, but not all ………….birds can fly. Both ……………….. the birds in the picture are incapable of flight
7. I have two brothers. Both ………. my brothers are in school
8. Do you know all ………….. the people in your biology class ?
9. All ………….. the students in my class are studying English
10. Not all ……………. people are friendly , but most …………. people have kind hearts


EXERCISE 2 : Using OF in expressions of quantity
Directions : add of and / or write -
1. some …….. fish are surface feeders. Others are bottom feeders
2. Some ……………….. the fish we caught were to small to keep
3. Almost all…………….. the fish in jennifer’s aquarium died. She finally had to admit
4. I bought several ……………… books at the used book sale
5. Several …………………. my friends and I have volunteered to clean up the litter left on the school grounds by toughtless students
6. The airline was crippled by a strike last month, but now it’s over. All …………….. the pilots were happy to get back to work after the strike
7. Most …………..people have a little…………..touble using the currencyin a foreign country for a few ……………………. days after they first arrive
8. There is nothing I like better than a good book, but I haven’t done much reading for pleasure lately. Most ……………….. the reading I do is related to my work
9. It’s important for young people to have goals in their lives. My mother always told me that any …………………….dream is worth pursuing if I know in my heart it is what I want to do. Few ………………people have made great accomplishments in life without first having a dream-a personal, inner vision of what is possible
10. Square dancing is a traditional folk dance in the united states. We all had a lot ………………..fun learning to square dance at the party. Many …………………..the people at the party had never done any square dancing before
11. When my parents was young , they had little …………….. opprtunity to travel
12. A few ……………………children are given their first watch by the time they are six years old. However , most ……… these children cannot tell time correctly


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