heisathome是什麼結構

是主系表結構。Tell me whether he is at home.

告訴我他是否在家。

Ask if he is at home .問他在不在家。

She was in fact summoning up her resolution to meet her father if he were at home .她正在下定決心去和父親見面，要是他在家的話。

Will he be at home at eight o clock this evening ?他今天晚上八點鍾在不在家 

I don ' t know whether he is at home or at the office我不知道他是在家還是在辦公室。