昨晚他花了两个小时看完这本小说.

昨晚他花了两个小时看完这本小说.
It (took ) him two hour (to finish ) reading the novel last night.
或
It (took ) him two hour (to ) read the novel last night.
分析：固定用法：
it take sb some time to do sth
finish doing sth
加油!不明白再问!