Was it at the school()there was a clock tower()he spent his

您先要了解强调句句式,就是 it is(was)...that.就是把一个正常的陈述句,要强调的部分直接提出来,放在it is（was）后面.比如说这个句子是想说,他是在这个学校里度过他的童年的.正常的陈述句是：He spent his childhood at the school. 只是这里又对“这个学校”用了一个定语从句修饰,说“这个学校里是有一个钟楼的”i.e. "where there was a clock tower.那我们先不管这个定语从句,先将那个陈述句变成强调句式,即为 It's at the school that he spent his childhood.然后你再把定语从句"where there was a clock tower放进去就是了.这个句子的成分就很清楚了.希望能帮到你.