Is it Shakespeare Theatre _______ you are going to watch the play The Merchant of Venice?
A
where引导的定语从句修饰先行词ShakespeareTheatre。此处并非强调结构，将“Isit去掉后，可以看出，这个句子缺少介词，所以，如果在原句中ShakespeareTheatre的前面加上介词in或at，则成为强调句。
Itisimportantto________yourskinfromtheharmfulstrongsunlight.
Theprofessoraskedaquestion,andDavid________agoodanswer.
Thenewdiscovery_______beofgreatservicetomankind.