make sure后接to do还是do

题目

make sure后接to do还是do

答案

make sure to do毫无疑问是正确的.
但是推荐答案中的第二种提法有点危险,很容易让人把do sth当成省略to的不定式作宾补.
其实 完整的说法应该是make sure （that）sb does sth.that常省略,宾语从句中的谓语do有人称、数和时态的变化.
但是要注意,make sure后宾语从句中的时态常不用将来时.如：
Please make sure that the door is locked.请弄准门确实是锁好了.
Are you willing to be a guarantee of your friend's good behaviour,ie undertake to make sure that he behaves himself properly?你愿担保你朋友品行良好吗?