一般疑问句:Has the foreign teacher come here since 2000?
否定句:The foreign teacher hasn't come here since 2000.
一般疑问句:Has this film already begin?
否定句:This film hasn't begun yet.
一般疑问句:Has the foreign teacher come here since 2000?
否定句:The foreign teacher hasn't come here since 2000.
一般疑问句:Has this film already begin?
否定句:This film hasn't begun yet.