appear to do中todo作什么成分？ 主+系+表+to do.其中to do在句中是什么成分，状语...
appear to be doing \u540e\u8fb9\u4e0d\u5b9a\u5f0f\u505a\u4ec0\u4e48\u6210\u5206\uff1fappear \u7cfb\u52a8\u8bcd\u3002
\u540e\u9762\u7684\u4e0d\u5b9a\u5f0f\u5c31\u505a\u8868\u8bed\u4e86\u3002
\u4f9b\u53c2\u8003\u3002
\u662f\u4e0d\u5b9a\u5f0ftoDO\u4f5c\u771f\u6b63\u7684\u4e3b\u8bed\uff0cIT\u662f\u5f62\u5f0f\u4e3b\u8bed\u3002\u53ef\u6539\u4e3aTodoisadjectives.
Appear to do sth 属于固定结构。扩展阅读：appeal to sb to do sth ... appear to sb ... appear to be doing ... appeal to doing用法 ... appeal to common sense ... appearance ... appear to others ... appeal to doing还是do ... appealing to sb ...
