Usage Examples Present Perfect vs. Present Perfect Continuous

• They have been waiting for us for thirty minutes. -
• Have you ever met Helen? -
• Why have we been waiting for her for forty minutes? -
• They have never met Alex. -
• How many pages have you written today? -
• Mary and Jane have been travelling since July. -
• Who have you been talking to for an hour? -
• Have you only been waiting for an hour here? -
• Charles has been teaching at the university since August. -
• Mary has been to Canada twice. -
• I have been writing emails for three hours. -
• Have you been reading this paper for two hours? -
• Has your mother been jogging? She looks fit! -
• Has Ruth ever cooked for you? -
• I have been working here for three months. -
• Julie has been working on this report since eight am. -
• I have just left my job. -
• They have been studying philosophy for five years. -
• I have already done my homework . -
• What is the tastiest food you have ever tried? -