1. She went to school and then she did the exercised
–> Before…
2. I (not listen)…. the lesson while the teacher (explain)… it to us
1. She went to school and then she did the exercised
–> Before…
2. I (not listen)…. the lesson while the teacher (explain)… it to us
1. She went to school and then she did the exercises
–> Before she did the exercises, she had gone to work ( before+ quá khứ đơn, quá khứ hoàn thành )
2. I wasn’t listening to the lesson while the teacher was explaining it to us (while+ quá khứ tiếp diễn, quá khứ tiếp diễn )
1, Before she did the exercises, she had gone to school
(Before+vế quá khứ đơn, quá khứ hoàn thành)
2, wasn’t listening/ was explaining
(câu này diễn tả hành động quá khứ, mà có while nên cả hai đều là thì quá khứ tiếp diễn)