excel的if函数怎么用

[[{"txt": "Excel\u5e38\u5e38\u88ab\u7528\u5230\uff0c\u4eca\u5929\u6765\u804a\u4e00\u804a\uff1aexcel\u7684if\u51fd\u6570\u600e\u4e48\u7528\u3002"}], [{"txt": ["\u5de5\u5177/\u539f\u6599"]}, {"txt": "\u8f6f\u4ef6\u7248\u672c\uff1aExcel 2016"}], [{"txt": ["\u65b9\u6cd5/\u6b65\u9aa4"]}, {"txt": "\u6253\u5f00\u9700\u8981\u4f7f\u7528if\u51fd\u6570\u7684\u8868\u683c\u3002"}, {"img": ["https://exp-picture.cdn.bcebos.com/def3c219ce2c5b1bda8c366f2b39131fcfec0eea.m2m?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_500%2Climit_1"]}, {"txt": "\u4ee5\u5224\u5b9a\u8be5\u5b66\u751f\u662f\u5426\u53ca\u683c\u4e3a\u4f8b\uff0c\u5728if\u62ec\u53f7\u91cc\u8f93\u5165C4