Linguapress English Grammar
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Linguapress English Grammar

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Tricky points of English ...

Explaining some of the everyday words in English, that are easy to confuse

The word so in English

It's a fact of language that so metimes it is the shortest smallest words that cause the greatest problems for learners. Perhaps that's not surprising. Many words are short, because they are common; like is, or be or to or so. As essential common words, they've evolved for centuries, and their shortness has helped them to survive. They may not always be easy to use, but they are easy to remember. Many short words have several different meanings, sometimes very different meanings. "So" is a very good example of this.

The different meanings of so

The word So has five common uses in English.  Very simply, we could express these by describing the five different functions in a few words
Now, let's look more closely at each of these,.

So expressing consequence.

Examples A:
  1. I took my umbrella with me, so I didn't get wet.
    (Using so with a meaning of consequence, one cannot invert the clauses
    So I didn't get wet, I took my umbrella
    . can only imply purpose.)
  2. It was raining, so we stayed at home
  3. The pilots are all on strike, so there are no flights today
  4. They both have good jobs, so they have plenty of money.
In this case so is a conjunctive adverb expressing a consequence.  
(Some grammar books consider it to be a coordinating conjunction)
This is the fundamental meaning of so as a connector.
The coordinated clause of consequence must follow the main clause.

In example A1 above, you might imagine that there could be an ambiguity between consequence and purpose; but this is not ambiguous for English-speakers. A so clause following a main always expresses consequence unless it refers to future time. (Compare with example B1 below).

So expressing purpose

Examples B:
  1. I took my umbrella with me, so I wouldn't get wet.
    (We can also say: so I wouldn't get wet, I took my umbrella)
  2. So that you understand this, I'm making it as clear as possible.
  3. So you understand me, I'm being as clear as possible.
  4. I'm being as clear as possible, so you understand me.
  5. I took the fast train, so I'd get home early.
  6. I'm taking the small roads so as to avoid the traffic on the motorway.
In this case, so is a subordinating conjunction, expressing a purpose. It can either be used alone, or else in the expression so that.
The subordinate clause of purpose can either precede or follow the main clause.

So that is usually preferred if the subordinate clause of purpose comes before the main clause.
So as is used to express purpose, particularly in spoken English. In this case the verb in the secondary clause is in the infinitive with to (example B6).

Note: so or in order for expressing purpose?

 As a general rule, so that is much more common than in order that (except in formal written language), and to or in order to are generally preferable to so as to (except in informal spoken language). See Styles of English.

So expressing addition

Examples C:
  1.  I once lived in Bombay, so did my boss.
  2. He says he's got the answer, but so does everyone else.
  3. This computer has broken down, and so has that one.
In this case, so is again a conjunctive adverb. It expresses an additional or a duplicate action.
In this case, so introduces the second clause (unless there is a conjunction), and the verb and the subject of this clause are inverted.

So expressing a degree

Examples D:
  1. This ice-cream is so good.  (meaning extremely good in my opinion)
  2. This ice-cream is ever so good.
  3. The computer is so old that it breaks down twice a week.
  4. This computer is so old; let's get a new one.
  5. You'd work better if you didn't talk so much.
  6. I'd buy more of these, if they weren't so expensive.
So does not quite mean the same as very; it is an intensifier, an adverb of degree qualifying an adjective, and  expressing relative high degree, or a perception of high degree.
It is often used to qualify an adjective in a statement of consequence.

Unlike other intensifiers (very, quite, etc) so it not usually used with attributive adjectives (adjectives that precede the noun), but only with predicative adjectives. These children are so good is acceptable; these so good children would not normally be considered as acceptable. Even if so is occasionally used in this way, it is more normal to say These are such good children. See ► Uses of such.

So expressing agreement or confirmation

Examples E:
  1. He was very angry, and he told me so .
  2. I'm going to London next week, or at least I hope so .
  3. You shouldn't really stop work before six, but you can do so today.
  4. "Do we have enough money?"  /  "I think so "
  5. "Will they ever know what really happened ?" / "I don't think so ."
  6. "You told the judge that you had forgotten?"  / "That is so ."
  7. "You were in London last night, weren't you?" / "Quite so ."
  8. So you've finished at last, have you?
So can have the meaning of "that" or "it is true" or "that that is true".
In this sense it a substitute word, a pro-form but not really a pronoun, as it refers back to a whole statement, not to a noun. (To refer back to a noun, we would use the pronoun it or they).  It confirms - often strongly - a statement that has already been made, or in some cases implied. It can be used in dialogue to confirm the answer to a question.

Some other functions of so

So is used in a number of idiomatic phrases, such as "so and so ", "and so on" or "so-so" . Here are some examples with explanations.
Examples F:
  1. So and so said you were coming. (meaning an unspecified person).
  2. ...... and so on.  (meaning... and more of the same)
  3. I'm feeling so-so today. (meaning not too bad, not too good).
  4. So! That's the answer. (The initial free-standing so expresses surprise or another emotion)..

Check out some more tricky words...  Since and for   Still and yet     All or whole ?  Enough .... and more like this


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Verbs : the future
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Gerunds, participles and -ing forms
The infinitive
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Adjective order in English
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Relative clauses in English
Conditional clauses in English
Word order in English
Reported questions in English
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The short story of English
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