武汉新东方酷学酷玩夏令营为大家介绍主语的用法。

    武汉新东方酷学酷玩夏令营为大家介绍主语的用法。
    (1)由名词、代词(人称代词用主格)、动词不定式、动名词等充当,说明动作是“谁”发出的。如：the painter painted a very nice picture. (画家画了一幅漂亮的画。) / they fought against sars bravely. (他们勇敢地与非典搏斗。) / to see is to believe. (耳听为虚眼见为实). / helping animals is to help people. (帮助动物就是帮助人类。)
    (2)动词不定式或动名词做主语时可用it代替,而不定式或动名词移至表语或宾语之后。如：it is very comfortable to have a class a seat during the long journey. (在长途旅行中能有个甲等座位简直太舒服了。) / eating too much is bad for your health.(=it is bad for your health eating too much.) (吃得太多对你的身体不利。)
    (3)口语中常见主语或“主--系”省略：(it is) nothing. ((那)没有什么。)/ (it) doesn’t matter. ((那)没有关系。) / (i) thank you. ((我)谢谢你。)
    (4)反意问句的附加问句,主语必须是代词：the man looks worried,doesn’t  he? (这个人看上去很着急不是吗？) / tigers are dangerous animals, aren’t they? (老虎是危险的动物不是吗？)
    (5)祈使句一般省略主语。加主语时往往用来指定某个人。keep the keyboards clean, children. (孩子们请保持键盘的清洁。) (省略了主语) / you go there and fetch me a glass of water. (你去给我弄一杯水来。)
    (6)主语一般在句首,但在问句中会处于第二位和句尾；倒装句及there be句型主语在动词之后。如：computers are made in this factory. (计算机生产于这家工厂。) / where are they? (他们在哪儿？) / does the boy like staying home? (这个男孩喜欢呆在家里吗？)
    (7)主语与谓语必须保持单、复数的一致, 而谓语与表语或宾语之间没有这一要求。neither jim nor rose has passed the exam. (jim和rose都没有通过考试。) / the chinese people are a hardworking and brave people. (中华民族是一个勤劳勇敢的民族。)
    (8)主语可以由从句充当,详见“主语从句”。 【纠错】