1.我祖父的視力很糟，沒眼鏡就不能閱讀。
2.我聽到腳步聲，一定是有人來了。
3.要不要我再給你沖杯咖啡？
4.我需要在這兒簽名嗎？
5.你絕對(duì)不可以忘記你的承諾。
6.你今天太累了，最好早點(diǎn)休息。
7.你敢坐云霄飛車嗎？
參考答案
1.My grandpa has a poor eyesight. He can't read without wearing glasses.
2.I heard footsteps. There must be somebody coming.
3.Shall I make another cup of coffee for you?
4.Need I sign here?
5.You must not forget your promise.
6.You're tired today. You had better go to bed earlier.
7.Dare you ride on a roller-coaster?
