Unspecified Time What's wrong with this sentence? "I have seen Michael yesterday." This is a very common problem for my students in their writing. Unspecified time We use the present perfect to say that an action happened at an unspecified time before now. The exact time is not important. You CANNOT use the present perfect with specific time expressions such as: yesterday, one year ago, last week, when I was a child, when I lived in Japan, at that moment, that day, one day, etc. We CAN use the present perfect with unspecific expressions such as: ever, never, once, many times, several times, before, so far, already, yet, etc. Examples: I have seen that movie twenty times. I think I have met him once before. There have been many earthquakes in California. People have traveled to the Moon. What are some common problems you face learning English?

Everyday vs every day This is a very common problem for my students in their writing. Everyday (adjective) This is my everyday coffee. Every day (adverb; time expression) I drink coffee every day. or Every day I drink coffee. What are some common problems you face learning English?

Concentration is important for motivation. If I ever feel frustrated I always take a deep breath and take things slowly.

Everyday vs every day This is a very common problem for my students in their writing. Everyday (adjective) This is my everyday coffee. Every day (adverb; time expression) I drink coffee every day. or Every day I drink coffee. What are some common problems you face learning English?