1. Emma rode her bike last night.
2. Emma rode her bike yesterday night.
[Are both okay? Can we use #2?]
3. Owen took a hot shower yesterday morning.
4. Owen took a hot shower last morning.
[Which one do we have to use, yesterday or last?]
5. He went fishing yesterday afternoon.
6. He went fishing last afternoon.
[Which one do we have to use, yesterday or last?]
7. She took a swimming class yesterday evening.
8. She took a swimming class last evening.
[Which one do we have to use, yesterday or last?]
2, 4, and 6 are not used.
All the others are fine.
1. Both sentences are grammatically correct, but #1 is the more common and natural way to express the idea of Emma riding her bike the previous night.
2. "Yesterday night" is not commonly used in English. Instead, we generally say "last night" to refer to the night before the current day. Therefore, it would be more appropriate to use #1, "Emma rode her bike last night."
3. Similar to the previous example, "yesterday morning" is the usual and preferred way to refer to the morning before the current day. Therefore, it would be more appropriate to use #3, "Owen took a hot shower yesterday morning."
4. "Last morning" is not commonly used in English. Instead, we would say "yesterday morning." So, it is more appropriate to use #3, "Owen took a hot shower yesterday morning."
5. Again, "yesterday afternoon" is the more natural and commonly used phrase to refer to the afternoon of the previous day. Therefore, it would be more appropriate to use #5, "He went fishing yesterday afternoon."
6. Similar to the previous example, "last afternoon" is not commonly used. Instead, we would say "yesterday afternoon." So, it is more appropriate to use #5, "He went fishing yesterday afternoon."
7. Both sentences are grammatically correct, but #7, "She took a swimming class yesterday evening," is the more common and natural phrasing to refer to the evening of the previous day.
8. "Last evening" can be used, but it is less common than "yesterday evening." Therefore, it would be more appropriate to use #7, "She took a swimming class yesterday evening."