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1. Read the sentences. What grammar tenses are used?
§ We were tired because we had been experimenting all day long.
§ After I had worked in the lab for a few weeks, I felt I knew the equipment
very well.
§ They were making observations of the night sky for several years hoping todiscover the planet they had calculated.
§ First students had a short talk with a lab instructor about safety in the lab and then they were allowed to work with some chemicals.
§ The lecture had already finished before we got there.
| Past Tenses § We use Past Simple talk about an activity or situation that began and ended at a particular time in the past. § We use Past Progressiveto say that something was going on around a particular time in the past or a longer background action or situation which was interrupted by a shorter action. § We use Past Perfect to speak about an action which happened before another past action. § We use Past Perfect Progressive to talk about an action or event continuing up to a specific time in the past. We put the emphasis on ‘how long’. |
2. List time expressions under the correct tense heading. Some expressions can be used more than once.
| · for | · before | · already | · first |
| · since | · after | · ago | · until |
| · when | · while | · as soon as | · during |
Past Past Past Past
Simple Progressive Perfect Perfect Progressive
……….. ………… …………
……….. ………… ………. …………
……….. ………… ………. …………
3. Complete the sentences with the correct Past tenses.
a) Class (begin, already) ___________ by the time I (get) ___________ there, so I (take, quietly) __________ a seat in the back.
b) My group mate (discuss) ___________ something with professor when I (walk) ____________ into the room.
c) It was midnight. I (study) ____________ for five straight hours. No wonder I (get tired).
d) Millions of years ago, dinosaurs (roam) _____________ the earth, but they (become) ____________ extinct by the time humankind first (appear) ____________.
e) I (call) Kate at nine last night, but she (be, not) ____________ at home. She (study) _____________ at the library.
f) Kevin suddenly realized that the teacher (ask) him a question. He couldn’t answer because he (daydream) _____________ for the last ten minutes.
g) I (see, never) __________ any of Picasso’s paintings before I (visit) ___________ the art museum.
h) The anthropologists (leave) ___________ the village when they (collect) ____________ enough data.
i) While Roger (write) ___________ an essay his roommate (clean) ___________ the room, so Roger (cannot) ____________ concentrate and (get) ____________ angry.
j) As I (pass) _____________ the hardest exam and (get) _____________ an excellent mark I (feel) ____________ a know-it-all.
| Speaking |
1. Look at the pictures of the inventions and label them.
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