13. It flows over boards thickly coated with grease.在本句中的定语从句thickly coated with greases前面省略了which/that are.coat一般做名词用，意思是外套”或（动物的）皮毛”。在本句...
3. Diamonds are made from carbon.由制成，可以用be made from和be made of两个词组来表达。但是be made from通常指制成品已看不出原材料是什么，而be made of可以看出该物品由什么材料制成的。如：1） Paper is made fr...
15. blast n. 疾风，强风；爆炸 v.炸，炸掉A blast of cold air sent a shiver all over his body.〔一股冷气使他浑身战栗。〕Furious blasts of thunder frightened everybody.〔一阵阵的霹雳炸雷吓...
Text A Diamonds本课主要单词1. rare adj. 稀有的，难得的These animals are so rare that I would do whatever I can to save them.〔这些动物很稀有，我会尽我所能去保护它们。〕On the rare occas...
表语从句1. One idea was that fish is the best brain food.2. Another idea is that you should not drink water with meals.3. The reason was that the acid in ...
3. Some savage tribes believed that eating enemies that had shown bravery in battle would make them brave.本句中的第一个that 引导的又是一个宾语从句，而后一个that 引导的是定语从句，修饰...
12. widespread adj. 分布广的，普遍的There was a widespread belief that she committed suicide.（人们普遍认为她是自杀的。）Industrial robots will be in widespread use.（工业机器人将...
Text A Fallacies about Food本课主要单词1. fallacy n. 谬误；谬论；错误的推理或信念That the earth is flat used to be a popular fallacy.（地球是扁平的这一谬误曾一度很流行。）Needless to say， t...
subject还常常做动词或形容词用，请看例句：1） The country was once subjected to foreign rule.（这个国家曾一度受外国统治。）2） Taipei was subjected to serious earthquakes last year.（台北去...
7. Chunking consists of grouping separate bits of information.在第一单元的Text B中我们已经对consist of有所了解。这一词组的意思是由组成”，它与be made up of；be composed of 的意思相近...