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1、1Unit 5 The power of natureSENTENCE EXPLANATIONS，Book 6 Unit 5请和你的同学一起认真分析下列句子，并补全所缺内容。这种学习方式能逐步提高你理解长难句的能力。1. Having collected and evaluated the information, I help other scientists to predict where lava from the volcano will flow next and how fast. (P34)【分析】 本句是一个主从复合句。主句主干为：I help other scientist
2、s to predict。 Having collected and evaluated the information 是动词-ing 形式短语的完成式作状语。 predict 后接两个分别由 where 和 how 引导的宾语从句，how fast 后省略了 it will flow。2. The lava that flows slowly like a wave down the mountain causes far more damage because it buries everything in its path under the molten rock. (P34)【分析
3、】本句是一个主从复合句。主句的主干为 The lava causes far more damage；that 引导定语从句修饰先行词_，并在从句中作主语；because 在句中引导原因状语从句。far 可以修饰比较级，意为“的多”。【仿写】我认为，从实践经验中获得的知识远比书本知识重要。In my opinion, knowledge _ is _ than that from book.23. The other two climbed down into the crater to collect some lava for later study, but this being my
4、first experience, I stayed at the top and watched them. (P35)【分析】本句是一个由 but 连接的并列句。this being my first experience 是一个独立主格结构，相当于一个原因状语从句：as this was my first experience。【仿写】天气允许的话，我们将明天动身。 _, we shall start tomorrow.答案2.【分析】lava【仿写】that is gained from practical experience; far more important3.【仿写】Weather permitting
