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.
将句子变成一般疑问句然后变成否定句 The foreign teacher has come here since 20
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.