I can not able to understand

Is the above sentence grammatically correct?

The words can and able have the same meaning, they're both used to talk about the ability of a person. How do I correctly use each word in a sentence?

  • 5
    No, it's not correct because can requires a verb, and able isn't one – blgt Mar 16 '15 at 10:57
  • @bigt I would have put your comment as an answer, you've done a good job giving a simple but complete explanation. – Mark Mar 16 '15 at 11:19

No, the sentence formation is incorrect.

"Can" is used in the present tense. It is used to talk about our ability to do things.


She can speak English well.

"Able to" is also possible in these cases; However, it sounds a bit more formal here.


She is able to speak English well.

So, you can say "I am not able to understand." This might be a right one.

  • Hi Ramya, I think your question could be improved by including a direct "yes" or "no" to the question "Is the above sentence formation is correct?" :) – Mark Mar 16 '15 at 11:20
  • 2
    No, the above sentence formation is incorrect. – Ramya S Mar 16 '15 at 11:21
  • Thanks, I think you should put that in the text of your answer to make it better! – Mark Mar 16 '15 at 11:27
  • 2
    Mark, I have edited my answer as you said. – Ramya S Mar 16 '15 at 11:35
  • Great work, I've upvoted it :) – Mark Mar 16 '15 at 11:36

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