activity sheet episode 18: salinity

ACTIVITY SHEET EPISODE 18: SALINITY Based on the context, identify whether the adverbial clause of time in the following sentences is formed using a time sequence marker, the present or the perfect participial form. 1. After melting the copper in the smeltery, the workers pour it into a mould for pipes. a) time sequence marker b) present participial form c) perfect participial form 2. Before the farmers load the wheat onto the trucks, it is harvested from the field. a) time sequence marker b) present participial form c) perfect participial form 3. Having struck oil in the desert, the engineers documented the location. a) time sequence marker b) present participial form c) perfect participial form 4. While going to class, Jane witnessed the accident in the chemistry lab. a) time sequence marker b) present participial form c) perfect participial form 5. Having passed the final exam, the students will be accepted into the Diploma program. a) time sequence marker b) present participial form c) perfect participial form 6. Before travelling to the Amazon, Tom will get some malaria tablets. a) time sequence marker b) present participial form c) perfect participial form 7. When the trees arrive at the paper mill, they are stripped of bark. a) time sequence marker b) present participial form c) perfect participial form 8. After completing its life cycle, the tree fern begins again. a) time sequence marker b) present participial form c) perfect participial form 9. When the hatched turtles returned to the sea, they were attacked by the seagulls. a) time sequence marker b) present participial form c) perfect participial form 10. While the wood pulp is cleaned, it is chemically bleached. a) time sequence marker b) present participial form c) perfect participial form ANSWERS 1. After melting the copper in the smeltery, the workers pour it into a mould for pipes. b) present participial form 2. Before the farmers load the wheat onto the trucks, it is harvested from the field. a) time sequence marker 3. Having struck oil in the desert, the engineers documented the location. c) perfect participial form 4. While going to class, Jane witnessed the accident in the chemistry lab. b) present participial form 5. Having passed the final exam, the students will be accepted into the Diploma program. c) perfect participial form 6. Before travelling to the Amazon, Tom will get some malaria tablets. b) present participial form 7. When the trees arrive at the paper mill, they are stripped of bark. a) time sequence marker 8. After completing its life cycle, the tree fern begins again. b) present participial form 9. When the hatched turtles returned to the sea, they were attacked by the seagulls. a) time sequence marker 10. While the wood pulp is cleaned, it is chemically bleached. a) time sequence marker

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