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Jigneshbharati
Posted: Tuesday, November 12, 2019 9:19:26 PM
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This page explains the terms strong and weak as applied to acids. As a part of this it defines and explains what is meant by pH, Ka and pKa.

https://www.chemguide.co.uk/physical/acidbaseeqia/acids.html
Please explain the use of "a" in "a part of..."
thar
Posted: Tuesday, November 12, 2019 11:40:52 PM

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They are using 'a part' as a countable noun.


There are several parts.
As one part it does X.
As another part it does y.
Jigneshbharati
Posted: Wednesday, November 13, 2019 2:50:08 AM
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Thanks. Is "explain" stative or dynamic in the context? Please explain the use of the present simple(explains) in the context?
FounDit
Posted: Wednesday, November 13, 2019 11:22:59 AM

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Jigneshbharati wrote:
Thanks. Is "explain" stative or dynamic in the context? Please explain the use of the present simple(explains) in the context?

It seems dynamic to me, as the page proceeds to go into detailed descriptions, including chemical examples, of each type of acid.

In providing this detailed view of these acids, the author "explains" the definitions. This explanation is the present simple in the same way as you use it when asking for thar or someone to "explain the use" to you.
Jigneshbharati
Posted: Wednesday, November 13, 2019 12:38:38 PM
Rank: Advanced Member

Joined: 11/3/2016
Posts: 2,829
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https://www.ef.co.uk/english-resources/english-grammar/simple-present-tense/

THE SIMPLE PRESENT TENSE IS USED:
To express habits, general truths, repeated actions or unchanging situations, emotions and wishes:
I smoke (habit); I work in London (unchanging situation); London is a large city (general truth)
To give instructions or directions:
You walk for two hundred meters, then you turn left.
To express fixed arrangements, present or future:
Your exam starts at 09.00
To express future time, after some conjunctions: after, when, before, as soon as, until:
He'll give it to you when you come next Saturday.
Which use from the above used in "this page explains..."?
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