16. This is an uncountable noun. It has no plural form.
这是个不可数名词,没有复数形式。
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17. When a noun stands for one thing it is singular; when a noun stands for more than one thing it is plural.
当一个名词代表一件事情时是单数,当它代表多件事情时是用复数形式。
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18. Can learn some simple noun from single to plural.
初步学会一些简单名词的单,复数形式。
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19. Note any grammatical characteristics of the words you are studying. For example, note when a verb is irregular and when a noun is uncountable or is only used in the plural.
记住一些单词的特殊语法点,如有些名词是不可数的,有些名词只有复数形式的等等。
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20. Give the plural of each singular noun below.
试用以下单数名词的复数式来填充空格。
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21. This noun appears in the plural form only, never in the singular form. This is a collective noun.
这个名词只以复数形式出现,从来没有单数形式。
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22. This is a collective noun. Though it appears in the singular form, it takes a plural predicate verb.
但当不可数名词前有表示数量的复数名词时,谓语动词用复数形式。
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23. But if it's just a common noun, we should use the plural form.
但如果是一般名词,那我们就需要用到复数的形式。
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24. But if it's just a common noun, we should use the plural form.