I'llletstudentsdosomeexercisestogether,makesurewethertheyunderstandornot.makesure前面用加TO吗

Question

I'll let students do some exercises together,make sure wether they understand or not.
make sure前面用加TO吗

Answer 1

不是的!可以改为：
1.I'll let students do some exercises together to make sure whether they understand or not.
2.I'll let students do some exercises together making sure whether they understand or not.
说明：1引导目的状语从句,2引导伴随状语从句!