高手过来看一下这是什么句型!Itwasbecauseofthisfast-flowingwaterthatthissitewasanatrualplaceformanufacturingworks.是主语从句还是强调句型阿!

　　高手过来看一下这是什么句型!

　　Itwasbecauseofthisfast-flowingwaterthatthissitewasanatrualplaceformanufacturingworks.

　　是主语从句还是强调句型阿!