Does Writer provide corrections for grammatical errors?

If I type these in Word,

  • I now him.
  • I should of done this.

it shows the errors and even suggests the correct words (know, have).

I have checked the lightproof in the Writing aid settings of LibreOffice, but when I wrote the sentences above and pressed the spell check button, it did not detect the errors.

Is this kind of correction not supported?

Menu Tools → Spelling and Grammar → Options → Options → Check Grammar as you Type

But in LO v5.1,6,2 the obvious errors in your examples are not “caught”. You must be using a later version.

Try LanguageTool.

Very limited tool though.

I don’t find really big limitations.

Depends on the language you use it for. With more developers, English is at an advantage.

I installed it, and it did not get those errors in my OP. The extension is very big so it must have some great correcting features, but unfortunately those do not seem to include my cases.