I'm spaced-out！我开小差了！ I beg your pardon！请你再说一遍！ I can't afford that！我付不起！ I can't follow you！我不懂你说的！ I can't help it！我情不自禁！ I couldn't reach him！我联络不上他！ I cross my heart！我发誓是真的！ I don't mean it！我不是故意的！
来源:恒星英语学习网-口语频道
