en to” and “have\has gone to”.Р(2) To distinguish ‘for,since and ago’ when match with some expressions about time..Р2.Ability objectsР(1)To understand the differences between the present perfect tense and the simple past tense. (2) To master ‘for’, ‘since’and ‘ago’with some durational verbs with the present perfect tense.Р3. moral objects РTo get the Ss to love our world.Р(三) Teaching key and Difficult pointР (1)To use “have\has been to”and “have\has gone to” in specific context.Р(2) To master ‘for’, ‘since’and ‘ago’with some durational verbs with the present perfect tense.Р(3) To understand the differences between the present perfect tense and the simple past tense.РPart Two The Teaching MethodsР1. Communicative teaching method2. Audio-visual teaching method 3. Task-based” teaching method