1.我祖父的视力很糟，没眼镜就不能阅读。
2.我听到脚步声，一定是有人来了。
3.要不要我再给你冲杯咖啡？
4.我需要在这儿签名吗？
5.你绝对不可以忘记你的承诺。
6.你今天太累了，最好早点休息。
7.你敢坐云霄飞车吗？
参考答案
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?
