1.  I regretted not having done more to help.

→ S + regret + (not) + Ving: hối hận về, hối hận vì

2.  Tickets for the concert will be sold during the lunch hour.

→ câu bị động thì TLĐ: S + will + be + V3/ed + (by+O)

3   We played tennis even though the weather was cold.

→ Even though/Although + S + V, S + V: mặc dù .. nhưng ..

= Despite/In spite of + N/V_ing, S + V

4   Everyone in the office had been looked up to by the manager.

→ looked up to sb= respect of sb: tôn trọng ai đó

@ $quynhly$

1  I regretted not having done more to help.

2  Tickets for the concert be/go on sale during the lunch hour.

3   We played tennis even though the weather was cold.

4   Everyone in the office looked up to the manager.