1) Jane hasn’t worn that skirt for one year.
⇒ It's one year since Jane last wore that skirt.
Giải thích :
→ Thì HTHT : " S + have/has not + VPII + for/since thời gian "
⇔ " It’s + time + since + S + last + V2/ed + O "
2) The students haven’t gone to school for a month.
⇒ It's a month since the students last went to school
Giải thích :
→ Thì HTHT : " S + have/has not + VPII + for/since thời gian "
⇔ " It’s + time + since + S + last + V2/ed + O "
3) The student last did the work last Monday
⇒ The students haven't done the work since last Monday.
Giải thích :
⇔ " S + have/has not + VPII + for/since thời gian "
4) I last saw him three days ago
⇒ I haven't seen him for three days .
Giải thích :
→ " S + last + V2/Ved + time + ago "
⇔ " S + have/has not + VPII + for/since thời gian "
5) They haven’t helped the boy since they knew that he was a bad boy .
⇒ The last time they helped the boy was before they have known that he was a bad boy.
Giải thích :
→ " S + have/has not + VPII + for/since thời gian "
⇔ " The last time + S + Ved/V2+ was + mốc thời gian/ khoảng thời gian "