●案例探究
1.It was very kind of them to meet me at the railway station and drove me to their home.
解析：此题为五星级题。drove改成drive。 因为to meet…and to drive 是平行结构，同时在句中作主语。drive 可以视为省略了to。
e.g. It is difficult for him to speak English and communicate with others in English.
2.To answer correctly is more important than finish quickly.
解析：此题为五星级题。在finish 前加to。to finish quickly 与to answer quickly 是不定式的平行结构。
e.g. To say is easier than to do.
