翻译是:
In order to catch up with other classmates,he often stays up.
He always stays up to catch up with other classmates.
He often stays up so as to catch up with other classmates.
翻译是:
In order to catch up with other classmates,he often stays up.
He always stays up to catch up with other classmates.
He often stays up so as to catch up with other classmates.