特殊过渡:状语从句when, where...
When the sun shines on the green plants in the hole, water evaporates from these plants. The vapor rises up and then cools down to form water drops under the plastic sheet. When there is more and more water, it flows along the sheet to accumulate under the lowest part. Finally, water falls down into the container directly under the middle stone.
词语多样化:
accumulate / gather / collect / obtain
词语具体化:
水蒸气vapor和蒸发evaporate这样的词并不容易,考试的时候可以用具体的方式加以规避:
The water turns into gas, rises and finally turns into liquid again and gathers under the sheet of plastic.
句式:
客观描述,多用一般现在时和被动语态。
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