） 如宾语从句说的是客观真理，无论主句时态如何，它的谓语动词仍须用现在一般时 当从句用过去时 怎么判断主句用什么时态
\u5bbe\u8bed\u4ece\u53e5 \u4e3b\u53e5\u662f\u8fc7\u53bb\u65f6\u6001 \u4ece\u53e5\u8981\u7528\u4ec0\u4e48\u65f6\u60011\u3001\u5bbe\u8bed\u4ece\u53e5\u4e2d\u4e3b\u53e5\u662f\u8fc7\u53bb\u65f6\u6001\uff0c\u5bbe\u8bed\u4ece\u53e5\u5fc5\u987b\u662f\u4e00\u79cd\u8fc7\u53bb\u7684\u65f6\u6001\u3002\u4f8b\u5982\uff1a
She asked me if I knew whose pen it was\uff0e\u5979\u95ee\u6211\u662f\u5426\u77e5\u9053\u8fd9\u662f\u8c01\u7684\u94a2\u7b14\u3002
He said that he could finish his work before supper\uff0e\u4ed6\u8bf4\u4ed6\u4f1a\u5728\u665a\u996d\u524d\u5b8c\u6210\u5de5\u4f5c\u3002
2\u3001\u5f53\u8868\u793a\u5ba2\u89c2\u4e8b\u5b9e\u6216\u666e\u904d\u771f\u7406\u7684\u53e5\u5b50\u505a\u5bbe\u8bed\u4ece\u53e5\u65f6\uff0c\u4efb\u4f55\u65f6\u5019\u90fd\u7528\u4e00\u822c\u73b0\u5728\u65f6\u3002\u4f8b\u5982\uff1a
The teacher said that the earth goes round the sun\uff0e\u8001\u5e08\u8bf4\u8fc7\u5730\u7403\u7ed5\u7740\u592a\u9633\u8f6c\u3002
3\u3001\u5f53\u4e3b\u53e5\u662f\u73b0\u5728\u65f6\u6001\u65f6\uff0c\u5bbe\u8bed\u4ece\u53e5\u53ef\u4ee5\u6839\u636e\u9700\u8981\u4f7f\u7528\u4efb\u4f55\u65f6\u6001\u3002\u4f8b\u5982\uff1a
I don't know when he will come back\uff0e\u6211\u4e0d\u77e5\u9053\u4ed6\u5c06\u4f55\u65f6\u56de\u6765\u3002
He tells me that his sister came back yesterday\uff0e\u4ed6\u544a\u8bc9\u6211\u4ed6\u59d0\u59d0\u6628\u5929\u56de\u6765\u4e86\u3002
\u6269\u5c55\u8d44\u6599\uff1a
\u9700\u8981\u6ce8\u610f\u7684\u662f\uff0c\u4efb\u4f55\u4ece\u53e5\u90fd\u4f7f\u7528\u9648\u8ff0\u53e5\u8bed\u5e8f\uff0c\u5bbe\u8bed\u4ece\u53e5\u5f53\u7136\u4e5f\u4e0d\u4f8b\u5916\u3002\u5bbe\u8bed\u4ece\u53e5\u7684\u5206\u7c7b\uff1a
1\u3001\u52a8\u8bcd\u5bbe\u8bed\u4ece\u53e5\uff1a\u987e\u540d\u601d\u4e49\uff0c\u5b83\u662f\u4f4d\u4e8e\u52a8\u8bcd\u540e\u9762\u7684\u5bbe\u8bed\u4ece\u53e5\u3002\u4f8b\u5982\uff1aHe asked whose handwriting was the best in our class\uff0e\u4ed6\u95ee\u6211\u4eec\u73ed\u4e0a\u8c01\u7684\u4e66\u6cd5\u6700\u597d\u3002
2\u3001\u4ecb\u8bcd\u5bbe\u8bed\u4ece\u53e5\uff1a\u987e\u540d\u601d\u4e49\uff0c\u5b83\u662f\u4f4d\u4e8e\u4ecb\u8bcd\u540e\u9762\u7684\u5bbe\u8bed\u4ece\u53e5\u3002\u4f8b\u5982\uff1aI agree with what you said just now.\u6211\u540c\u610f\u4f60\u521a\u624d\u8bf4\u7684\u8bdd\u3002
3\u3001\u5f62\u5bb9\u8bcd\u5bbe\u8bed\u4ece\u53e5\uff1a\u987e\u540d\u601d\u4e49\uff0c\u5b83\u662f\u4f4d\u4e8e\u5f62\u5bb9\u8bcd\u540e\u9762\u7684\u5bbe\u8bed\u4ece\u53e5\u3002\u4f8b\u5982\uff1aI am afraid that I will be late. \u6050\u6015\u6211\u8981\u8fdf\u5230\u4e86\u3002
1\uff0e\u4e3b\u53e5\u7528\u4e00\u822c\u73b0\u5728\u65f6\uff0c\u4ece\u53e5\u53ef\u7528\u4efb\u610f\u65f6\u6001\u3002\u53ef\u5f52\u7eb3\u4e3a\u201c\u4e3b\u73b0\u4ece\u4e0d\u9650\u201d \u3002\u3000\u3000
2\u3001\u4e3b\u53e5\u7528\u8fc7\u53bb\u65f6\uff0c\u4ece\u53e5\u7528\u8fc7\u53bb\u67d0\u4e2a\u65f6\u6001\u3002\u53ef\u5f52\u7eb3\u4e3a\u201c\u4e3b\u8fc7\u4ece\u56db\u8fc7\u201d\u3002
3\u3001\u4e3b\u53e5\u7528\u8fc7\u53bb\u65f6\uff0c\u4ece\u53e5\u662f\u79d1\u5b66\u771f\u7406\u3001\u5ba2\u89c2\u5e38\u8bc6\u3001\u540d\u4eba\u683c\u8a00\u65f6\u7528\u4e00\u822c\u73b0\u5728\u65f6\u3002 \u3000\u3000
4\u3001\u60c5\u6001\u52a8\u8bcdcould/would\u7528\u4e8e\uff0c\u201c\u8bf7\u6c42\u201d\uff0c\u8868\u793a\u59d4\u5a49\u3001\u5ba2\u6c14\u7684\u8bed\u6c14\u65f6\uff0c\u4ece\u53e5\u4e0d\u53d7\u4e3b\u53e5\u7684\u7ea6\u675f\u3002
\u6839\u636e\u4ece\u53e5\u8bed\u6cd5\u529f\u80fd\u7684\u4e0d\u540c\u53ef\u5206\u4e3a\uff1a\u4e3b\u8bed\u4ece\u53e5\u3001\u8868\u8bed\u4ece\u53e5\u3001\u5bbe\u8bed\u4ece\u53e5\u3001\u540c\u4f4d\u8bed\u4ece\u53e5\u3001\u5b9a\u8bed\u4ece\u53e5\u548c\u72b6\u8bed\u4ece\u53e56\u7c7b\u3002
\u524d\u56db\u7c7b\u7531\u4e8e\u4e3b\u8bed\u4ece\u53e5\u3001\u8868\u8bed\u4ece\u53e5\u3001\u5bbe\u8bed\u4ece\u53e5\u53ca\u540c\u4f4d\u8bed\u4ece\u53e5\u5728\u53e5\u5b50\u7684\u529f\u7528\u76f8\u5f53\u4e8e\u540d\u8bcd\uff0c\u6240\u4ee5\u901a\u79f0\u540d\u8bcd\u6027\u4ece\u53e5\uff1b\u5b9a\u8bed\u4ece\u53e5\u529f\u80fd\u76f8\u5f53\u4e8e\u5f62\u5bb9\u8bcd\uff0c\u79f0\u4e3a\u5f62\u5bb9\u8bcd\u6027\u4ece\u53e5\u3002
\u800c\u72b6\u8bed\u4ece\u53e5\u529f\u80fd\u76f8\u5f53\u4e8e\u526f\u8bcd\uff0c\u79f0\u4e3a\u526f\u8bcd\u6027\u4ece\u53e5\u3002\u72b6\u8bed\u4ece\u53e5\u8fd8\u53ef\u4ee5\u5206\u4e3a\u6761\u4ef6\u72b6\u8bed\u4ece\u53e5\u3001\u539f\u56e0\u72b6\u8bed\u4ece\u53e5\u3001\u5730\u70b9\u72b6\u8bed\u4ece\u53e5\u3001\u76ee\u7684\u72b6\u8bed\u4ece\u53e5\u3001\u8ba9\u6b65\u72b6\u8bed\u4ece\u53e5\u3001\u6bd4\u8f83\u72b6\u8bed\u4ece\u53e5\u3001\u65b9\u5f0f\u72b6\u8bed\u4ece\u53e5\u3001\u7ed3\u679c\u72b6\u8bed\u4ece\u53e5\u548c\u65f6\u95f4\u72b6\u8bed\u4ece\u53e5\u3002
\u6269\u5c55\u8d44\u6599\uff1a
\u4e3b\u8bed\u4ece\u53e5\u5c0f\u7ed3\uff1a
1\u3001\u5f15\u5bfc\u4e3b\u8bed\u4ece\u53e5\u8fde\u8bcd\u6709that,whether,who,what,whatever\u7b49\u3002
2\u3001\u8fde\u8bcd\u4f4d\u4e8e\u53e5\u9996\u4e0d\u80fd\u7701\u7565\u3002
3\u3001\u4e3b\u8bed\u4ece\u53e5\u5927\u591a\u6570\u60c5\u51b5\u4e0b\u89c6\u4e3a\u7b2c\u4e09\u4eba\u79f0\u5355\u6570\u3002
\u6ce8\u610f\uff1a\u5f53what\u5f15\u5bfc\u7684\u540d\u8bcd\u6027\u5206\u53e5\u4f5c\u4e3b\u8bed\u65f6\uff0c\u4e3b\u8c13\u4e00\u81f4\u95ee\u9898\u6781\u4e3a\u590d\u6742\u3002
\u7528\u4f5c\u72b6\u8bed\u7684\u4ece\u53e5\u53eb\u4f5c\u72b6\u8bed\u4ece\u53e5\uff0c\u5176\u5173\u8054\u8bcd\u662f\u4e00\u4e9b\u4ece\u5c5e\u8fde\u8bcd\u3002\u4fee\u9970\u4e3b\u53e5\u4e2d\u7684\u52a8\u8bcd\u3001\u5f62\u5bb9\u8bcd\u548c\u526f\u8bcd\uff0c\u901a\u5e38\u7531\u4ece\u5c5e\u8fde\u8bcd\u5f15\u5bfc\uff0c\u6309\u5176\u610f\u4e49\u548c\u4f5c\u7528\u53ef\u5206\u4e3a\u65f6\u95f4\u3001\u5730\u70b9\u3001 \u6761\u4ef6\u3001 \u539f\u56e0\u3001\u8ba9\u6b65\u3001\u76ee\u7684\u3001\u7ed3\u679c\u3001 \u65b9\u5f0f\u3001\u6bd4\u8f83\u72b6\u8bed\u4ece\u53e5\u7b49\u3002
\u53c2\u8003\u8d44\u6599\u6765\u6e90\uff1a\u767e\u5ea6\u767e\u79d1--\u4ece\u53e5
地球是圆的，月亮绕着地球转，地球绕着太阳转。。。等等这些都是的
He said to me that moon travels around the sun.
这就是：宾语从句that moon travels around the sun说的是客观真理，虽然主句He said to me 用的一般过去时，从句时态仍然一般现在时travels保持不变。
客观真理就是它不论在什么时候在什么状态下都无须论证的.比如一些常识.光比声音的传播速度快是个客观真理.其谓语动词不受主句时态影响.
如I was taught that light travels faster than sound.
扩展阅读：什么叫主语 谓语 宾语 ... 100个简单的宾语从句 ... 初中英语144个语法点 ... 宾语从句事实真理例句 ... 主语 谓语 宾语 状语 ... 宾语从句三要素口诀 ... 英语语法主谓宾方地时 ... 宾语从句必背十句 ... 一张图看懂英语语法 ...
