And yes I try to use simple words when I am not sure. But once I had a situation when I could not use even simple words! It was my fist time I came to London and I was on a bus. There were few people...A girl (aged 11 or so) was sitting in front of me. She saw I had a watch on my wrist and turned back for a few times. I was wondering why she was looknig at me and my watch. Maybe she was shy. But finally she asked me a question to know what the time was. I did understand her question but I didn't know how to answer correctly as I had never said the time in English before! I told some numbers (now I know that was absolutely wrong) but it was so funny when a little girl asked you and you a 'big girl' couldn't answer.