The rules
- An opening phrase must describe the subject that comes right after the comma: Walking home, we saw a rainbow (not Walking home, a rainbow appeared).
- Which refers to the noun just before it, never to a whole clause: The river flooded, damage that took months to repair (not The river flooded, which took months to repair).
- A phrase with -ing after a comma tells what the subject did or what its action caused: The dam held back the river, creating a lake.
- An appositive must sit right next to the noun it renames: We met Dr. Rai, a geologist, at the museum.
- A pronoun such as it, they or this needs one clear noun to point to: When the cup hit the plate, the plate cracked (not it cracked).
- A pronoun can’t refer to a possessive word: In his diary, Darwin wrote (not In Darwin’s diary, he wrote).
- Put a describing phrase next to what it describes: a book bound in leather from London (not a book from London bound in leather).
This time: 0 right, 0 wrong