CORRECT USES OF SOME PREPOSITIONS


Correct uses of some prepositions



Sometimes we get confused while using prepositions. As we know that a preposition is a word placed before a noun or pronoun to show true relationship with another word in a sentence. To express the right sense of a sentence we must establish the right relationship between the noun or pronoun and other words of a sentence. If we get confused or use an inappropriate preposition between two words , then the sense or the meaning of the sentence will be different. Therefore it is very important to use a correct one.

Now in this article I am not going to cover the whole preposition chapter or the basic rules but to discuss the uses of some preposition which may confuse us. Basically we get confused between---- IN/WITHIN, IN/AT. BY/WITH, ON/UPON, IN/INTO, AFTER/IN, SINCE/FOR, SINCE/FROM and many more.In this article we’ii  learn about the variant situations and conditions that we need to understand and remember while using these prepositions

IN/WITHIN

First of all , let’s take two examples using in and within—
i)                    My father has gone to a business tour and he will return in a week .
ii)                  My father has gone to a business tour and he will return within a week .
Now, don’t think that both the sentences express the same sense.The meaning and the sense of the sentences are interestingly different.
IN denotes at the end of the given time period in future while WITHIN expresses before the end of the time period
Therefore, in the first instance , the sense what we get is that the person will return at the end of the week mentioned in the sentence( and not before a week). Whereas in sentence no 2 it means that the person will return any time before the given time period (week).This is the key difference between the use of IN and WITHIN.

BUY/WITH

BY is generally used after past participle form of verb in the passive mood of a sentence. BUY is used before living things or human beings to denote the doer of any activity. But WITH is used before the instrument or non-living thing with which an activity or action is done. As---
i)                    The thief was beaten by the men with sticks.
ii)                  The picture is drawn by John with a pencil only.

SINCE/FOR

SINCE is used to express a point of time in the past. And FOR is used to denote the duration of time for any particular act in any type of tense. AS---
i)                    I have been reading this story since 6 in the morning. (note, though the sentence is in present perfect continuous tense but the time mention is a past moment.}
ii)                  I have been reading this story for two hours.
In the first sentence a point of time ( 6 ‘o’ clock) when the act started is mentioned. Hence, SINCE has been used. While, in second one no specific point of time is mentioned. Instead, the duration of the act(reading) is mentioned. i.e. how long the act has been going on. Hence , FOR has been used .

SINCE/FROM

SINCE is used to denote a point of time in the past and generally used before the specific time mentioned in present perfect or present perfect tense ( as we discussed earlier). While FROM is used in any form of tense. Again we need to know that when FROM is used in a sentence it is generally followed by other prepositions like  to, till, until etc. i.e. FORM denotes the starting point along with the ending point of an act by following to, till, until etc.   AS---
I)                    I have been living here since 1990.
II)                  This program will be running from 8 a.m. to 11 a.m.
III)                I have been there from 2010 till now.

ON/UPON

When we spoke of things which are unmoved or at rest , we use ON. On the other hand, when things in motion are spoken of take the preposition UPON. Examples will help you to make out the concept clearer. As---
i)                    We sat on the wooden bench in the park.
ii)                  The thief jumped upon the fence.
iii)                The cat sprang upon the wall.
iv)                He was told to stand on the bench.

IN/INTO

IN denotes one’s sate of rest or position inside anything. While INTO denotes one’s change of position from one place towards inside of anything.
i)                    Dad is in the room.( implies rest)
ii)                  He fell into the pool. ( implies change of position towards the pool.)

AFTER/IN

AFTER is used to refer at the end of a time period in past . But, if a point of time is to mention then AFTER can be used in all tenses.  As---
i)                    The wound was cured after a week. ( it will be wrong if we say The wound will be cured after a week)
ii)                  He will come/comes/came after 6 p.m.
Whereas,  IN must be used to denote at the end of a future space of time. As---
i)                    He will come in a month.
ii)                  They will return in a few days.

 AGO/BEFORE

AGO is used to refer a time before now ( at present) while BEFORE denotes a time earlier than a past event.  There is one more point to remember that the preposition BEFORE is generally used in past perfect tense. Look at the instances---
i)                    I joined this office 2 years ago.
    ii)            I had joined this office before Mr. Roy resigned


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