that was the second time that i had got the prize.这句话是定语从句,the second time

the second time 在 that was the second time 中做表语,又为后面的定语从句做先行词.在从句中充当什么成分根据你所说：that was the second time that i had got the prize. 是定语从句，那么 the second time 在从句中做表语。上面回答很清楚的了。