defination of grammatical weight

In grammar, inflection or inflexion is the modification of a word to express different grammatical categories such as tense, grammatical mood, grammatical voice,aspect, person, number, gender and case. Conjugation is the inflection of verbs; declension is the inflection of nouns, adjectives and pronouns. according to wikipedia so inflection would be the answer to the question

If you make any grammatical errors in your report, you will have to redo it.
Word processing makes fixing grammatical errors much easier.

No this is not grammatical. The correct phrase is "did he wake up?"

Past tense is the grammatical term.