An essential relative clause provides necessary, defining information about the noun. On the other hand, non‐ essential relative clauses provide additional, non‐necessary information about the noun.

The mark of fluent English-language writers or speakers is the way they effortlessly do away with words mandated by formal grammar — which only impede the quick delivery of their ideas. Nonnative ...

The mark of fluent English-language writers or speakers is the way they effortlessly do away with words mandated by formal grammar, but which only impede the quick delivery of their ideas. Nonnative ...

If you ever feel bad about your grammar or embarrassed you don’t know more, here’s a story that might make you feel better. Recently, I reread something I wrote years ago about “good things come to he ...