求一些英语语法.

1个回答

  • 名词复数的规则变化

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    情况 构成方法 读音 例词

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    一般情况 加 -s 1.清辅音后读/s/; map-maps

    2.浊辅音和元音后 bag-bags

    读 /z/; car-cars

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    以s,sh,ch,

    x等结尾的词 加 -es 读 /iz/ bus-buses

    watch-watches

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    以ce,se,ze,

    (d)ge等结尾

    的词 加 -s 读 /iz/ license-licenses

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    以辅音字母+y 变y 为i

    结尾的词 再加es 读 /z/ baby---babies

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    助动词have的用法

    1)have +过去分词,构成完成时态,例如:

    He has left for London.他已去了伦敦.

    By the end of last month,they had finished half of their work.

    上月未为止,他们已经完成工作的一半.

    2)have + been +现在分词,构成完成进行时,例如:

    I have been studying English for ten years.

    我一直在学英语,已达十年之久.

    3)have+been +过去分词,构成完成式被动语态,例如:

    English has been taught in China for many years.

    中国教英语已经多年.