9A现在完成时用法专练2页.doc

9A现在完成时用法专练I. 用所给动词的正确时态填空。 1. I _ never _ (speak) to a foreigner 2. _ Tom _ (return) the library book?Yes, he has When _ he _ (return) it?Half an hour ago 3. Her mother _ (go) to Beijing. She _ (leave) this morning.4. I _ just _ (do) it.5. Li Ming _ (study) English for two years.II. 按要求转换下列各句，每空一词。 1. He has already finished his homework. （改为否定句） He _ finished his homework _