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[bcdas]

Very informative post sir.

It will be highly appreciated to develop ones proficiency in English.

Thanks and best regards.

Bimal Das 

[Anisur Rahman]

we must appreciate the efforts of our Faculty Members from English Department who are trying their best for improving our English through their writing. Hats off to them!

[Minhajul Islam]

Thank a lot, Sir. For your creative activities is on the learning grammar.This creativity can easily influence or inspire one to learn English as playing.   

[shibli]

Incorrect: I am agree with you

Correction: I agree with you.

‎

[shibli]

I am agree/agreed to my mother .

I am agree/agreed with the idea of selling books on high prices/costly.

In standard formal written English, these sentences are incorrect.

Correction:

I agree with my mother (or, I am in agreement with my mother)
I agree with the idea of selling books at high prices
Agree with (or be agreeable to)

[shibli]

Prepositions (in, on, at, to)

                    Rules for Prepositions IN, ON, AT, TO

Basic Rules

A.  AT a time
B.  ON a day
C.  IN a month (season, year, decade, century)

D.  AT an address
E.  ON a street
F.  IN an area (neighborhood, town, borough, state, country, continent, ocean,
     the world, the solar system, the universe)

               20 Special Rules for Prepositions IN, ON, AT, TO

1.  look AT and listen TO

2.  TO with verbs of desire, necessity, expectation
     love TO, like TO, hate TO, want TO, need TO, have TO, hope TO, expect TO

3.  AT night
     IN the morning, IN the afternoon, IN the evening

4.  ON transportation
     ON the bus, ON the train, ON the subway, ON a plane, ON a jet, ON a ship,
     ON a bicycle, ON a motorcycle, ON a surfboard, ON a skateboard
     BUT
     IN a car, IN a taxi, IN a small boat, IN an elevator, IN a helicopter

5.  AT an intersection (where two streets cross)
     AT Broadway and 42nd Street, AT Fifth Avenue and 34th Street

6.  ON an island, ON a farm, ON a college campus, ON earth, ON a planet

7.  expressions that mean sometimes use different prepositions:
     from time TO time, ON occasion, once IN a while

8.  IN a park, IN a yard, AT a playground

9.  ON anything flat
     ON a plate, ON the wall, ON the floor, ON a shelf, ON the blackboard,
     ON a table, ON a desk, ON the stove, ON your face, a hat ON your head

10.  IN a room or anything smaller
     IN the closet, IN a drawer, IN a cup, IN a bowl, IN a glass, IN your
     mouth, ideas IN your head, a look IN your eye, a ribbon IN your hair

11.  TO when moving from point A TO point B
     go TO school, drive TO work, take a trip TO Boston, take your kids TO
     school, fly TO London, walk TO the library, bring your dog TO the vet

12.  ON a/an [adjective] morning, afternoon, evening, night, day
     ON a cold afternoon, ON a sunny morning, ON a rainy evening,
     ON a Saturday night, ON a spring day, ON a special night

13.  ON vacation, ON the weekend, ON a trip, ON a picnic, ON your break,
     ON a leave of absence, ON your lunch hour

14.  IN the water swimming (or drowning), ON the water boating

15.  AT the beach (the whole place), lie ON the beach (=ON the sand), play IN the sand

16.  ON anything like a line
     ON the coast, stand ON line, ON the border, ON the side, ON a team/committee

17.  ON forms of communication
     ON TV, ON the radio, ON the phone, ON the fax machine, ON the computer, ON
     a disk, ON a CD, ON a hard drive, ON a channel, ON a screen

18.  a report or news article ON the economy (ABOUT the economy)

19.  ON time for an event or activity: Come to the meeting ON time. Be in class ON time.

20.  IN time (or too late) TO do something: Get to the station IN time TO catch a train.

ESLprof.com/handouts/Info/preprule.com

[shibli]

to come in handy - to be useful;

I'll put these bottles in the cupboard - they might come in handy some day.

[shibli]

mark something up / down - to reduce or raise the price of something;

This coat has been marked down from $10 to $8.

[shibli]

in short order - immediately;

When the burglar saw the police car he left the shop in short order.

[shibli]

a slap on the wrist - to get a light punishment (for doing something wrong);

He got a slap on the wrist for not coming to work, but nobody was really angry.

[shibli]

tooth and nail - with every available resource; with unrelenting effort;

They fought for a new shirt tooth and nail.

[shibli]

pull out all the stops - to do everything you can to make something successful;

He pulled out all the stops to catch the criminal.

[shibli]

in cold storage - intentionally and without emotion;

The killer walked up and shot the woman in cold storage.

[saila siddika]

you grammar site has helped me. i m so great full to you. thank you sir. :)

[shibli]

Read more and more and practise them