if引导的虚拟语气. 例如if he were....... 那如果去掉if的话 were要不要变成w if在虚拟语气中三种用法的公式是什么？
if\u5f15\u5bfc\u7684\u53e5\u5b50\u4ec0\u4e48\u65f6\u5019\u7528\u865a\u62df\u8bed\u6c14\uff0c\u4ec0\u4e48\u65f6\u5019\u4e0d\u8981\u7528\u865a\u62df\u8bed\u6c14\u5462\uff1f\u5f15\u5bfc\u7684\u6761\u4ef6\u72b6\u8bed\u4ece\u53e5\u7684\u5206\u7c7b\u53ca\u865a\u62df\u6761\u4ef6\u53e5\u7684\u5224\u65ad
1\u3001\u53ef\u4ee5\u628a\u6761\u4ef6\u53e5\u5206\u4e3a\u4e24\u7c7b\uff1a
1).\u771f\u5b9e\u6761\u4ef6\u53e5\uff08Sentences of Real Condition\uff09\uff1a\u51e1\u662f\u5047\u8bbe\u7684\u60c5\u51b5\u53d1\u751f\u6027\u53ef\u80fd\u5f88\u5927,\u5c31\u662f\u771f\u5b9e\u6761\u4ef6\u53e5.\u4f8b\u5982\uff1a
\u2474\u3001If I have time , I will help you with this work.\u5982\u679c\u6211\u6709\u65f6\u95f4\u4f1a\u5e2e\u52a9\u4f60\u505a\u6b64\u5de5\u4f5c\u7684.
\u2475\u3001As long as I say anything wrong, you must point it out.\u53ea\u8981\u6211\u8bf4\u4e86\u4ec0\u4e48\u9519\u8bdd,\u4f60\u4e00\u5b9a\u8981\u6307\u51fa\u6765.
\u2476\u3001If time permits, we'll go fishing together.(\u5982\u679c\u6709\u65f6\u95f4\u7684\u8bdd,\u6211\u4eec\u5c31\u4e00\u8d77\u53bb\u9493\u9c7c.\uff09
2).\u865a\u62df\u6761\u4ef6\u53e5\uff08Sentences of Unreal Condition\uff09\uff1a\u5f53\u5047\u8bbe\u662f\u4e0d\u5927\u53ef\u80fd\u5b9e\u73b0\u65f6,\u5c31\u662f\u865a\u62df\u6761\u4ef6\u53e5.\u4f8b\u5982\uff1a
\u2474\u3001If I were you , I would have attended the meeting. \u5982\u679c\u6211\u662f\u4f60\u7684\u8bdd,\u5c31\u53bb\u53c2\u52a0\u4f1a\u8bae\u4e86.
\u2475\u3001If he had come here yesterday, he would have seen his old friend.\u5047\u5982\u4ed6\u6628\u5929\u6765\u8fd9\u513f\u7684\u8bdd,\u5c31\u4f1a\u770b\u89c1\u4ed6\u7684\u8001\u670b\u53cb.
\u2474\u3001If it had rained yesterday, we would have stayed at home.\uff08\u5982\u679c\u6628\u5929\u4e0b\u96e8\u7684\u8bdd,\u6211\u4eec\u5c31\u4f1a\u7559\u5728\u5bb6\u91cc.\uff09
2\u3001.if\u6761\u4ef6\u72b6\u8bed\u4ece\u53e5\u4e2d\u865a\u62df\u8bed\u6c14\u7684\u5224\u65ad
\u5224\u65ad\u662f\u771f\u5b9e\u6761\u4ef6\u53e5\u8fd8\u662f\u975e\u771f\u5b9e\u6761\u4ef6\u53e5.\u53ea\u6709\u5728\u975e\u771f\u5b9e\u6761\u4ef6\u53e5\u4e2d\u624d\u4f7f\u7528\u865a\u62df\u8bed\u6c14.\u901a\u8fc7\u53e5\u5b50\u610f\u601d,\u770b\u5047\u8bbe\u7684\u6761\u4ef6\u662f\u5426\u80fd\u591f\u5b9e\u73b0,\u80fd\u591f\u5b9e\u73b0\u662f\u771f\u5b9e\u6761\u4ef6\u53e5,\u4e0d\u80fd\u4f7f\u7528\u865a\u62df\u8bed\u6c14\uff1b\u5047\u8bbe\u7684\u6761\u4ef6\u4e0d\u80fd\u5b9e\u73b0\u5219\u662f\u975e\u771f\u5b9e\u6761\u4ef6\u53e5,\u8981\u7528\u865a\u62df\u8bed\u6c14.
\u5224\u65ad\u8fd9\u4e2a\u5047\u8bbe\u662f\u4e0e\u54ea\u4e2a\u4e8b\u5b9e\u76f8\u53cd.\u901a\u5e38\u6709\u4e09\u79cd\u60c5\u51b5\uff1a\u2460\u4e0e\u8fc7\u53bb\u4e8b\u5b9e\u76f8\u53cd.\u2461\u4e0e\u73b0\u5728\u4e8b\u5b9e\u76f8\u53cd.\u2462\u4e0e\u5c06\u6765\u4e8b\u5b9e\u53ef\u80fd\u76f8\u53cd.
3\u3001\u201c\u540e\u9000\u4e00\u6b65\u6cd5\u201d
\u540e\u9000\u4e00\u6b65\u6cd5\u662f\u6307\u5728\u51c6\u786e\u5730\u5224\u65ad\u4e86\u8be5\u53e5\u4e0e\u54ea\u4e00\u4e8b\u5b9e\u76f8\u53cd\u540e,\u6309\u865a\u62df\u8bed\u6c14\u7684\u540e\u9000\u4e00\u6b65\u6cd5\u5904\u7406\u4ece\u53e5\u8c13\u8bed\u52a8\u8bcd\u7684\u65f6\u6001.\u5373\uff1a\u5728\u975e\u771f\u5b9e\u6761\u4ef6\u72b6\u8bed\u4ece\u53e5\u4e2d,\u8c13\u8bed\u52a8\u8bcd\u6309\u6b63\u5e38\u60c5\u51b5\u201c\u540e\u9000\u4e00\u6b65\u201d.\u4e5f\u5c31\u662f\uff1a
\u2460\u4e0e\u8fc7\u53bb\u4e8b\u5b9e\u76f8\u53cd,\u5728\u4ece\u53e5\u4e2d\u7528\u8fc7\u53bb\u5b8c\u6210\u65f6\u5f62\u5f0f\u8868\u793a.
\u2461\u4e0e\u73b0\u5728\u4e8b\u5b9e\u76f8\u53cd,\u5728\u4ece\u53e5\u4e2d\u7528\u8fc7\u53bb\u4e00\u822c\u65f6\u5f62\u5f0f\u8868\u793a.
\u2462\u4e0e\u5c06\u6765\u4e8b\u5b9e\u53ef\u80fd\u76f8\u53cd,\u5728\u4ece\u53e5\u4e2d\u7528\u8fc7\u53bb\u5c06\u6765\u65f6\u5f62\u5f0f\u8868\u793a.
\u4e3b\u53e5\u4e2d\u5219\u7528\u60c5\u6001\u52a8\u8bcdwould, should, could \u7b49\u52a0\u4e00\u4e2a\u4e0e\u4ece\u53e5\u4e00\u81f4\u7684\u52a8\u8bcd\u5f62\u5f0f.\u4f8b\uff1a
\u2474\u3001If I had come her yesterday, I would have seen him.
\u2475\u3001If I were a teacher, I would be strict with my students.
\u2476\u3001If it should snow tomorrow, they couldn't go out.
4\u3001\u6ce8\u610f\u4e8b\u9879
\u2460if\u6761\u4ef6\u53e5\u4e2d\u5982\u6709were, should, had,\u53ef\u4ee5\u7701\u53bbif,\u5e76\u4f7f\u7528\u5012\u88c5\u8bed\u5e8f.
\u2461\u5728\u73b0\u4ee3\u82f1\u8bed\u4e2dif\u6761\u4ef6\u72b6\u4e0e\u4ece\u53e5\u4e2d\u7684\u8c13\u8bed\u52a8\u8bcd\u5982\u679c\u662fbe\u5176\u8fc7\u53bb\u5f62\u5f0f\u4e00\u822c\u7528were.
\u82f1\u8bed\u8bed\u6cd5\uff1aif\u7684\u865a\u62df\u8bed\u6c14
当从句中含有were/should/had的形式时，If可以省略，但句子应为倒装形式，即were/should/had要提前置于句首。
举个例子
If she were here, she would attend the meeting， too. 如果她在这里，她也参加会议。
→Were she here, she would attend the meeting ，too.
扩展阅读：if引导的三种虚拟语气 ... as if的三种虚拟语气 ... if i were a boy ... 为什么不是if i was you ... if三大虚拟语气公式 ... as if对过去的虚拟语气 ... as if 引导的虚拟语气 ... it looks as if虚拟语气 ... if引导的错综虚拟语气 ...
