It is last year that this middle school was built.
这是强调句
是在去年遭了这所中学
The scientist made a speech which moved the audience to tears.
这个科学家作了一个演讲,让观众都感动得流泪
You will not remember facts if you do not listen carefully.
如果你不认真听,
You find it difficult to learn English well.
你发现很难讲英语学好