sat改错语法题
问题描述：
sat改错语法题
althea gibson,the first african american tennis player（that they recognized as a ）world champion,began playing amateur tennis in the 1940's.括号内句子是有误的,改为to be recognized as,如果是recognized as我能理解,但是为什么有个to be
答
原句为 that has been recognized as a world champion,再由此句转化成不定式to be recognized as a world champion为什么是不定时啊？done也可以啊？大学英语，先行词有序数词时用不定式做定语，忘了？好吧，我高中