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1 seven kinds of coloured light are还是is made up sunlight(其中c

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1 seven kinds of coloured light are还是is made up sunlight(其中coloured
2尽可能少 用as ……as possible
3越来越少 be getting smaller and smaller还是be getting small and small
4we can‘t imagine what difficulty ____(face)
5students could hardly understand until it_____(explain)again
1.are,Seven kinds of coloured light are made up sunlight.
日光由七种(单)色光混合而成.
coloured light,(单)色光
2.as little as possible(形容前面的不可数名词);as few as possible(形容前面的可数名词)
3.be getting smaller and smaller,用比较级、而不用原型
4.We can‘t imagine what difficulty will be faced.
我们想象不到将会遇到什么困难.
困难是被(我们)碰到,故用被动式be faced,且发生于未来,故用一般将来时态
5.Students could hardly understand until it was explaind again.
直到它再次解释过,同学们才能理解.(除非它再经解释,否则同学们很难理解.)