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1. 不可数名词:

Furniture luggage clothing equipment poetry jewelry machinery weaponry scenery information knowledge evidence foliage health advertising

2.学科名词(不可数，不加冠词):

mathematics economics statistics physics politics mechanics genetics geology geography chemistry philosophy biology history astronomy

3. 单复数特殊名词:

man/men woman/women tooth/teeth foot/feet goose/geese

basis/bases analysis/analyses crisis/crises hypothesis/hypotheses

axis/axes alga/algae larva/larvae fungus/fungi stimulus/stimuli

datum/data bacterium/bacteria medium/media spectrum/spectra

mouse/mice child/children phenomenon/phenomena

4.单复数同行 :

aircraft spacecraft series species means sheep deer fish salmon trout carp starfish jellyfish shellfish walrus

5. 可跟that同位从句:

observation， fact， belief， discovery， doubt， statement， conclusion， decision idea，

evidence， hope， news， opinion， thought， rumor， explanation， truth

延伸阅读：

托福写作注意事项—语法问题

托福写作需要注意什么？（一）

托福写作需要注意什么？（二）

更多阅读资料：
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