1. In 3:00 p.m., let's go out.
2. After 3:00 p.m., let's go out.
(Which one is right?)
3. In 3 hours, let's go out.
4. After 3 hours, let's go out.
(Which one is right?)
5. In 3 hours, he went out.
6. After 3 hours, he went out.
(Which one is right?)
What does "In 3:00 p.m." mean? It means nothing to me.
I think you mean after 3 hours, not sometime in 3 hours.
1 is incorrect; 2 is correct.
3 and 4 are both OK, but 4 is better.
5 and 6 are OK, but 6 is better.
#1 could be "In 3 hours..."
Sra
1. Both sentences are grammatically correct, but they have different meanings.
"In 3:00 p.m., let's go out" means that specifically at 3:00 p.m., you and someone else should go out.
2. "After 3:00 p.m., let's go out" means that sometime after 3:00 p.m., you and someone else should go out. The exact time is not specified, but it should be after 3:00 p.m.
3. Both sentences are grammatically correct, but they have different meanings.
"In 3 hours, let's go out" means that three hours from now, you and someone else should go out.
4. "After 3 hours, let's go out" means that sometime after a period of three hours has passed, you and someone else should go out. The starting point of the three hours is not specified.
5. Both sentences are grammatically correct, but they have different meanings.
"In 3 hours, he went out" means that three hours after a reference point, he went out.
6. "After 3 hours, he went out" means that sometime after a period of three hours has passed, he went out. The starting point of the three hours is not specified.