5. They are excited about going camping next week

-> Excited + to/ about + Ving

6. I was surprised to meet him by chance yesterday

-> Subject + Surprise + to + Verb (infinitive)

7. I haven't gone out to Paris for 3 years

-> The last time + S + V2/ed + was + time ago

= S + have/has + not + V3/ed + for time

8. After Bob had written some letter, he went to bed

-> Cấu trúc: After +  past perfect (quá khứ hoàn thành)+simple past (quá khứ đơn)

9. When Tom was going to work, he met his former teacher.

-> Hành động đang diễn ra dùng thì quá khứ tiếp diễn thì hành động khác xen vào dùng thì quá khứ đơn

10. This is the first time I have seen this kind of food

-> This is the first time + S + have/has + V3/ed

11. While he was having breakfast, he read a newspaper

-> While + S + was/were + Ving, S + V2/ed

12. I have never read such an interesting story like this before

-> S + have/has + never + V3/ed + before 

14. The last time Maria played piano was 5 years ago

-> S + have/has + not + V3/ed + for time

= The last time + S + V2/ed + was + time ago