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《Learning about Language》集体备课PPT课件优质课下载
Reptails appeared
Mammals appeared
【分析】
a. 此复合句主句为What it was to become was uncertain； 从句 _______ 引导的定语从句。
b. 主句中包含一个由what引导的主语从 句What it was to become。
c. until是介词，与其前带否定前缀的形容 词uncertain构成not ... until句式，表示“到……才，在……之前”，引导between 4.5 and 3.8 billion years ago作时间状语。
1. What it was to become was uncertain until between 4.5 and 3.8 billionyears ago when the dust settled into a solid globe.
when
2. The earth became so violent that it
was not clear whether the shape would
last or not.
地球开始变得激烈动荡，不知道这个
固体形状是否会继续存在下去。
a. 此复合句的主句为The earth became
so violent；从句为_____引导的结果
状语从句。
b. so ... that ... 如此……以致…….
that
violent adj. 暴力的；强烈的；剧烈的，猛烈的；颜色鲜艳的
e.g.1. Children should not be allowed to
watch violent movies.
2. There was a violent storm at sea that
night and their ship sank.
3. Her dress was a violent pink.
用violent的适当形式填空。