... dùng kèm với since, for, since when, how long: B Practice: 1. Put the verb into the correct form, present perfect (I have done) or simple past (I did). 1. I (see) her before. 2. I (see) her last ... Topic4: MY NEIGHBORHOOD PERIOD 15. PRESENT PERFECT AND PAST SIMPLE TENSE A. Revision: Past simple Present perfect S + V 2 / V– ed S + didn’t + V 1 Did + S + ... ...................................................... 3 Put the verb into the correct form, present perfect (I have done) or simple past (I did). 1 Mr Clark .......................... (work) in a bank for 15 years. Then he gave it up. 2...