Usage Examples Present Perfect vs. Present Perfect Continuous

• I have been writing emails for three hours. -
• My sister has not come back yet. -
• I've seen the film you recommened me. -
• Ann hasn't read this paper yet. -
• I have just left my job. -
• Charles has been teaching at the university since August. -
• Mary and Jane have been travelling since July. -
• Luke has written four books. -
• Have you ever met Helen? -
• Has your cousin graduated from the university yet? -
• I've been reading the book you gave me for two weeks. -
• Has your mother been jogging? She looks fit! -
• They have been studying philosophy for five years. -
• I have already done my homework . -
• Has Max been exercising lately? He looks great! -
• My husband has started a new painting this week. -
• I have been working here for three months. -
• I have already cooked the dinner. -
• You are all sweaty! What have you been doing? -
• What is the tastiest food you have ever tried? -