英语六大时态基本结构 如 主语+have/has+过去分词+宾
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1 一般现在时：主语+BE （ am / is / are ） +名词/ 形容词/副词/介词短语/……； 或 主语+实义动词（注意主语是第三人称单数时动词的变化）+ 宾语+ ……
如 He is a student
He works hard .
2 一般过去时：主语+BE（ was/ were ） + 名词/形容词/副词/介词短语/……；或 主语+实义动词过去时+ 宾语+……
如 He was a student ten years ago.
He finished his homework ten minutes ago .
3 一般将来时：主语+ wii + 动词原形+……； 或 主语+be （ am/ is/are ）+going to +动词原形+……
如 He will go out soon .
He is going to play basketball tomorrow.
4 现在进行时：主语+助动词be （ am/is / are ） + 动词的现在分词+……
如 I am reading English .
She is singing .
5 过去进行时：主语+助动词BE（was / were ） + 动词的现在分词+ ……
如 He was playing basketball just now .
6 现在完成时：主语+have / has +动词的过去分词+ 宾语
如 I have been to Beijing twice .
He has studied English for two years .
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