0
Anonymous Posted 10 years ago
Grammar
"sleep for + time" or "sleep + time?"
I'd like to know which way below is correct, and when I should add "for" before the "a period of time" and when I don't.
1) Cats sleep 16 hours a day.
If this sentence is correct, why does it no need to add a for before "16 hours?"
2) Cats sleep for 16 hours a day.
It this one is correct. Does it mean in every sentence, "for" should be added before the "time?"
Thank.
1) Cats sleep 16 hours a day.
If this sentence is correct, why does it no need to add a for before "16 hours?"
2) Cats sleep for 16 hours a day.
It this one is correct. Does it mean in every sentence, "for" should be added before the "time?"
Thank.
Top answer
" Because a time expression can be used directly as an adverb.
- " Because a time expression can be used directly as an adverb.
Get the Weekly English Kit 📬
New words, one handy idiom, and a 2-minute quiz — delivered to your inbox to keep your streak alive.
1 Answers
0
AnonymousIf this sentence is correct, why does it no need to add a for before "16 hours?"Because a time expression can be used directly as an adverb.
0
Related Questions