4. Make questions using either Present Perfect or Present Perfect Continuous. 1. My friend is waiting for me at the station. (How long...?) 2. He translates books. (How many...?)

4. Here are the questions using either Present Perfect or Present Perfect Continuous: 1. How long has your friend been waiting for you at the station? *Explanation:* We use Present Perfect Continuous to ask about the duration of an action that started in the past and continues until now. 2. How many books has he translated? *Explanation:* We use Present Perfect to ask about an action that happened at an unspecified time in the past.