第18单元
(1) ★ allow for: 顾及，考虑，为什么作准备
★break away from: 摆脱，脱离
★There is (no) possibility that……: …… 有（无）可能。
★be visible/invisible to……: 对……看得见/看不见
★be aware of: 意识到，知道
★keep/lose track of: 与……保持/失去联系
★invent the telegraph/telephone: 发明电报/电话
★may/might (just) as well do ……: 还是做什么好，不如做什么
(2) get stuck: 遇到困难，陷进去
by trial and error: 反复实验，不断摸索
laptop computer: 笔记本电脑 nosetop computer: 鼻上电脑
desktop computer: 台式电脑 palmtop computer: 掌上电脑
have ……background: 有……的背景
Theory of Relativity: 相对论
by hand: 用手，手工
the Bible: 《圣经》。 offer up: 奉献，贡献
pass/give judgement on sb: 对某人作判决
(3)★now (that) + 陈述句： 既然，由于
Now (that) you have passed the test, you can drive on your own.
(4)★ what 作主语引导的主语从句：
What seems impossible today may one day become possible.
What is certain is that she will come to my nineteenth
birthday party.
What shouldn't be forgotten is that he did well in the war.
What has been buried has often been buried well.
What makes this shop different is that it offers heroin.
(5)★ take … for granted…: 认为…属实/理所当然 ， 不关心。
I take it for granted (that) you have read the novel.
We took it for granted that you wanted to join the army.
He is so busy with his work that he takes his family for granted.
(6)★ 祈使句(,) and 陈述句： 假设……, 就会…… (肯定结果)
祈使句, or /otherwise/or else 陈述句.
要做……, 否则就会…… (否定结果)


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