Look, seem and appear are all copular verbs and can be used in a similar way to indicate the impression you get from something or somebody. Copula verbs join adjectives (or noun compounds) to ...

E nglish grammar is the foundation of effective communication, and understanding its basic rules is essential for beginners.

Yes, it is correct that we cannot use a contracted negative form when we use inverted word order to express unreal or impossible condition in the past. Instead, we are obliged to use the full form ...