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《Unit 4 Life on Mars Grammar Sentences (II) Using adverbial clauses or simple sentences; Using object clauses or simple sentences; Using defining relative clauses or simple sentences》公开课优秀教案教学设计（九年级下册）
aware adj. 知道，意识到
e.g. Are you aware how far Mars is away from the sun?
circle vt. 围绕，将一圈起来
e.g. It takes Mars about two Earth years to circle around the Sun once.
agreement n. 一致，同意
e.g. Are scientists in agreement that living on Mars would be possible for humans
in the future?
distance n. 距离，远处
e.g. Are you aware of the distance between Mars and the sun?
possibility n. 可能性
e.g. Do scientists agree about the possibility of living on Mars?
Step 2 Explanation
简单句和复合句的转换
我们可以用介词短语把状语从句转换成简单句，我们可以用介词把宾语从句和定语从句转换成简单句
A Using adverbial clauses or simple sentences
We can rewrite some adverbial clauses in simple sentences with at the age of, because of and without.
转换时要注意时态和意思的一致性和准确性。
Neil Armstrong received his student pilot’s licence When he was 16.
Neil Armstrong received his student pilot’s licence at the age of 16.
People might float in space because the gravity is slow.
People might float in space because of the low gravity.
Humans cannot survive if there is no food, water or oxygen.
Humans cannot survive without food, water or oxygen.
Exercises 1
Daniel is writing about visiting another planet. Help him rewrite the sentences