Usage Examples Present Perfect vs. Present Perfect Continuous

• How long has Nataly been calling you? -
• Mary and Jane have been travelling since July. -
• My sister has not come back yet. -
• They have never met Alex. -
• I haven't been playing hockey for a long time. -
• Charles has been teaching at the university since August. -
• I have already done my homework . -
• Luke has written four books. -
• Grandma has been cooking all day. -
• I have just left my job. -
• Have you only been waiting for an hour here? -
• I have been working here for three months. -
• They have been studying philosophy for five years. -
• Who have you been talking to for an hour? -
• Has your cousin graduated from the university yet? -
• Have you been reading this paper for two hours? -
• Has Ruth ever cooked for you? -
• Erica has not been listening to you all this time. -
• What countries has John ever been to? -
• I have been writing emails for three hours. -