1. “It’s time to do sth. = It’s time for sth.” 意为“该做……的时候了”。注意:该句式也可扩展为:“ It’s time for sb. to do sth. ”“是某人做某事的时候了”。 如: It’s time for us to go to school. 我们该去上学了。 2. “It takes sb. some time to do sth.” 意为“某人花费多少时间做某事”。 如: It takes me twenty minutes to do my homework every day. 我每天要花二十分钟的时间做作业。 3. “sb. be ready to do sth.” 意为“某人乐意做某事”。 例如: He is always ready to help others. 他总是乐于帮助别人。 4. “ … be (not) adj. enough to do sth.” 意为“某人或物足够(不能)做某事”。 如: The boy is old enough to go to school. 这男孩已到了上学的年龄了。 5. “It’s adj. for/of sb. to do sth.” 意为“对某人来说做某事……”。如: It is dangerous for children to swim in that river. 孩子们在那条河里游泳是危险的。 6. “ … would like/ love to do sth.” 意为“……喜欢 / 想做某事”。本句式还可扩展为“… would like / love sb. to do sth. ”意为“……喜欢 / 想让某人做某事”。 例如: I would like to go swimming with you. 我想和你一起去游泳。 7. “ … had better do sth.” 意为“……最好做某事”。 例如: You had better not speak when your mouth is full of food. 满嘴食物时你最好别说话。 8. “Why don’t you do …… ? = Why not do …… ?” 意为“你为什么不……”。 如: This book is a bit difficult. Why not read something easier? 这本书有点难,你为什么不读点容易的? 9. “Would/ Will you please do … ?” 意为“请你……好吗?”。 如: Would you please open the window ? 请你打开窗户好吗?