keeping是動名詞,保持着的意思,可單獨做主語,而to keep是動詞不定式,去保持的意思,表目的。例如:He made fire to keep warm in winter 他在冬天生火保持温暖 I hope I'm not keeping you up.我希望我並沒有打擾到你睡覺。
Where have you keeping yourself.你去哪兒了