Accuracy in EAP

Proofreading: Ergative verbs

Exercise: Answers

The highlighted verbs are ergative.

Water, in its different forms, cycles continuously through the lithosphere, hydrosphere, atmosphere, and biosphere. Water evaporates into the atmosphere from the land and the sea. Plants and animals use and reuse water and release water vapor into the air. Once in the air, water vapor circulates and cools and can condense to form clouds and precipitation, which fall back to earth. At one time or another, all of the water molecules on earth have been in an ocean, a river, a plant, an animal, a cloud, a raindrop, a snowflake, or a glacier.

In all cases an alternative is possible:

The scientist evaporates the water → The water evaporates.

The scientist circulates the water vapour → The water vapour circulates.

The scientist cools the water vapour → The water vapour cools.

The scientist condenses the water vapour → The water vapour condenses.

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