请问:"不"字在什么情况下读二声, 什么情况下读四声?谢谢
\u201c\u4e0d\u201d\u5b57\u5728\u4ec0\u4e48\u60c5\u51b5\u4e0b\u8bfb\u7b2c\u4e8c\u58f0\uff0c\u4ec0\u4e48\u60c5\u51b5\u4e0b\u8bfb\u7b2c\u56db\u58f0\u2026\u4e8c\u58f0\uff1a\u4e0d\u8981 \u4e0d\u5728\u2026\u2026
\u56db\u58f0\uff1a\u4e0d\u597d \u4e0d\u5982\u2026\u2026
\u5982\u679c\u4e0d\u540e\u9762\u7684\u5b57\u662f4\u58f0\uff0c\u4e0d\u5c31\u8bfb\u4e8c\u58f0\uff0c\u5176\u4f59\u4e00\u822c\u90fd\u8bfb\u56db\u58f0\u3002
\u201c\u4e0d\u201d\u662f\u56db\u58f0\u7684\uff0c\u201c\u662f\u201d\u4e5f\u662f\u56db\u58f0\u7684\uff0c\u6240\u4ee5\u8fde\u8d77\u6765\u8bfb\u8981\u53d8\u58f0\u8c03\uff0c\u8fd9\u65f6\u5c31\u662f\u8bfb\u4e8c\u58f0\u7684\u4e86\uff0c\u5982\u201c\u4e0d\u4f1a\u201d\u3001\u201c\u4e0d\u8981\u201d\u7b49\uff1b\u5176\u5b83\u7684\uff0c\u5982\u201c\u4e0d\u884c\u201d\u3001\u201c\u4e0d\u53ef\u4ee5\u201d\u7b49\u90fd\u662f\u5ff5\u56db\u58f0\u7684\uff0c\u55ef\uff0c\u5e94\u8be5\u662f\u8fd9\u6837\u5427
一般"不"后面跟第四声的字就读第二声,比如,不要,不像,不气等.其他的"不"一般都是第一声,比如,不行,不可,不能等
二声时～不是,四声时～不行
好像只有不要的时候念第2声吧,其他都念第4声.....
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