The only problem is the spelling mistakes. It should be "whales" and "giving".
Grammar mistakes.
Green wavy underline indicates grammar "mistakes" (you have to turn the grammar correction function on to have Word indicate it has found mistakes)
The answer to your question is the numerical value of your grammar mistakes.
Grammatical mistakes are errors in the usage of grammar rules in a language. These errors can include issues with spelling, punctuation, syntax, verb tense, subject-verb agreement, and word choice. Grammar mistakes can affect the clarity and precision of communication.
you read something and look for mistakes in spelling, grammar, punctuation
Searching for mistakes in grammar usage and mechanics involves carefully reviewing written text to identify errors such as incorrect sentence structure, punctuation, spelling, and grammar. This process helps ensure clarity and coherence in written communication.
read a book on grammar,then keep reading regularly-hopefully well written material will rub off on you.
You can find a free grammar checker at spellcheckplus.com/. It will check your paper for common spelling mistakes and grammatical errors.
Spelling, grammar and inaccuracies.
Grammar checkers and spell checkers will identify the obvious mistakes, but you still need to proofread the document word for word.
"Did you have a chance to speak with him?" is a perfectly good and correct sentence. It does not contain any grammar mistakes.
Fixing spelling and grammar is one of the tasks of the WikiReviewers. See related link below.