语法专题：现在完成时和初中时态小结a. 读故事，悟语法 现在完成时的理解【You have lost your whole life.】Once a learned man was in a boat. He was going to cross the river.“Do you know math?” he asked the boating man. “No, sir,” the boatman answered.“Then you have lost one quarter of your life,” said the learned man.“Do you know history?” he asked again. “No, sir,” said the boatman.“Then you have lost half of your life,” said the learned man.“Do you know painting?” he continued. “I dont know that, either,” sa
