What is wrong in the following sentence?
"As I am tired so I shall sleep early tonight."

It seems alright to me but apparently it has an error somewhere.

closed as off-topic by Glorfindel, shin, David Richerby, Lamplighter, LMS Jan 30 '17 at 17:08

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I would not word it this way (as you did in your comment in another answer):

We cannot use a 'so' after an 'as'.

Both of those words are flexible words with different usages, and a "rule" like that will likely get you into trouble.

Here's the problem with the sentence in your question. In that context, the first word (as) is being used to essentially mean 'because', and the second (so) is being used to mean 'therefore'. That's why the repetition doesn't work. Does this sentence look okay to you?

Because I am tired therefore I shall sleep early tonight.

(Perhaps the awkwardness off that structure is more glaring when we use the bigger words.) No, instead we'd say one of the following:

  • Because I am tired I shall sleep early tonight.
  • I am tired, therefore I shall sleep early tonight.
  • 1
    @theraven - I thought that someone should explain a little more, even if you understand it now. (Someone might visit this question later wondering the same thing.) – J.R. Jan 30 '17 at 10:37

You'd use either

As I am tired I shall sleep early tonight.


I am tired so I shall sleep early tonight.

  • Hey thanks for the answer and can you clear a doubt for me. Can we not use a 'So' after an 'As'?. – theraven Jan 30 '17 at 9:01
  • As far as I know it's not possible to use 'So' after 'As' the way you tried to, no. It would be possible to use 'So' in another way, like: "As I am so very tired I shall be heading to bed" – Christian B Jan 30 '17 at 9:17

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