Unit 18: Present Perfect Tense vs. Past Tense

1 76 unit 18: Present Perfect Tense vs. past TenseUnit 18: Present Perfect Tensevs. past TenseTHE PROBLEMSShe has lived there last didn t call 1:___1) Circle the verbs (auxiliary verbs, main verbs and past participles).___2) Write past if the verb is in the past Tense and pres perf if the verbis in the Present Perfect I had a problem with my computer yesterday. past2. We have already seen that movie. pres perf3. Sami has never hiked to the top of a mountain. _____4. They were in the basement during the storm. _____5. Lee has been late every day since Monday. _____6. Many people cried at the end of the movie.

2 _____7. Ann didn t wait for me at the station. _____8. I haven t begun my homework yet. _____Exercise 2:Look at the sentences and complete the They finished their homework very late last : We use _____ because the sentence is in the past ) an auxiliary and past participleb) just a main verb2. He hasn t slept at all for two : We use _____ because the sentence is in the Present Perfect ) an auxiliary and past participleb) just a main verb3. The passengers have already started to board the : We use _____ because the sentence is in the Present Perfect ) an auxiliary and main verbb) an auxiliary and past participle 77 unit 18: Present Perfect Tense vs.

3 past Tense4. My boss didn t like my : We use _____ because the sentence is in the past ) an auxiliary and main verbb) an auxiliary verb and past participle5. The bank opens at 9 every day except : The verb (opens) is in the _____ ) presentb) Present perfectc) past6. Antonio s father has never forgotten his : The verb (has forgotten) is in the _____ ) presentb) Present perfectc) past7. Sara ate dinner at 6 last : The verb (ate) is in the _____ ) presentb) Present perfectc) pastExercise 3:Write the verb Tense for each verb. Use Present , Present Perfect , and 1. callspast 2. calledpres perf_ 3.

4 Has called_____ 4. lived_____ 5. have lived_____ 6. live_____ 7. has built_____ 8. builds_____ 9. built_____ 10. drinks_____ 11. drank_____ 12. has drunk_____ 13. don t make_____ 14. didn t make_____ 15. haven t made78 unit 18: Present Perfect Tense vs. past TenseExercise 4:Fill in the chart with the correct forms of the Form Present TensePast TensePresent Perfect TensecleanHe cleans___ He cleanedHe has cleaned___playHe _____ He _____He _____playWe _____ We _____ We _____sitI _____ I _____ I _____teachYou _____ You _____ You _____buyShe doesn t ___ She didn t____ She hasn t _____liveThey _____ They _____ They _____writeI don t _____ I didn t _____ I haven t _____eatHe _____ He _____ He _____giveWe _____ We _____ We _____haveYou _____ You _____ You _____travel They _____ They _____ They _____takeShe doesn t ___ She didn t____

5 She hadn t _____Exercise 5:Fill in the blanks with verbs from the chart in Exercise 4 and explain whyyou chose Yesterday, I cleaned my messy : We use simple past with yesterday. 2. Mari has sat at her computer since 8 o : We use Present Perfect with since and a We didn t write a letter to the : We use the base form after didn t. 4. Last year, they _____ around the : _____ 79 unit 18: Present Perfect Tense vs. past Tense5. Jim doesn t have much money, so he _____a car : _____6. Now, Maria_____ in the suburbs, but she works in : _____7. Mr. Todd and Ms. Smith _____ math at thisuniversity for eight : _____8.

6 The students _____ a break during the testlast : _____9. In France in 1999, Patti _____ a lot of bread : _____10. My boss _____ never _____ me a Present on : _____11. Ken _____ video games for several : _____12. I didn t finish my report because I _____ a problemwith my : _____Exercise 6:Choose the correct Present Perfect Tense has ) a main verb onlyb) an auxiliary and past participle2. In Present Perfect Tense , the past participle is _____ the past Tense ) always the same form as b) sometimes a different form from80 unit 18: Present Perfect Tense vs. past TenseExercise 7:Look at the sentences.

7 Choose the correct explanation for We had a good time at Jim s party last ) This is correct. It has a main verb (had) for past ) This is incorrect. With the words last weekend, we need an auxiliary verb (has)and a past participle (had).2. Every summer, they take a trip to the mountains for their ) This is correct. It has a main verb (take) in the Present ) This is incorrect. With the expression, Every summer, we need an auxiliary verb(have) and a main verb (taken).3. Tom never saw a ) This is correct. It has a main verb (saw) for past ) This is incorrect. With the word never, we need an auxiliary verb (has) and pastparticiple (seen).

8 4. I haven t spoke to my boss about my pay raise ) This is correct. With the word yet, we need an auxiliary verb (haven t) and amain verb (spoke).b) This is incorrect. With the word yet, we need an auxiliary verb (haven t) andpast participle. However, we need to change spoke to spoken because spoken isthe past The waiters clean the tables at the end of the ) This is correct. It has a main verb (clean).b) This is incorrect. We need an auxiliary verb (have) and a past participle(cleaned).c) This is incorrect. With the subject waiters, the main verb should be She has already wrote her pen pal 18 ) This is correct.

9 With the word already, we need an auxiliary verb (has) and amain verb (wrote).b) This is incorrect. With the subject she and time expression already, we need anauxiliary (has) and a main verb (writes).c) This is incorrect. Wrote is the past Tense . With the auxiliary has, we need thepast participle (written). 81 unit 18: Present Perfect Tense vs. past TenseExercise 8:Write the sentences that your teacher reads. Use the words in the number with each word is the sentence number that the word is Jack1 chores2 suburb3 apartment4 vacation5 medicine1. _____2. _____3. _____4. _____5. _____Exercise 9:___1) Write a paragraph with 5 sentences or more about one of the ) Circle the verbs in your Choices:___1) Write about a problem that you had when you were ) Write about a problem that someone else (for example, yourbrother, friend, or neighbor) had when he or she was younger.