问题
选择题
We have made good preparations for Sarah’s birthday, but if she ________ late to the party, it would ruin the surprise for her.
A．comes
B．would come
C．had come
D．were to come
答案
D
题目分析：句意：我们已经为萨拉的生日准备好了，但是如果她迟到的话，那就毁了给她的惊喜了。这里if后是对未来的一种虚拟，根据主句的谓语动词would ruin，也可判断出是对将来的虚拟，在从句中对于将来的虚拟应该用were to do，故选D。
考点：