it is accepted that no college can educate its students by the time they graduation是否正确我觉得gr

1. OK to use "graduate" (not "graduation"), but
2. Better to use "have graduated" in genuine English.
3. In grammar theory, the best would be "will have graduated", which would, in fact, be rarely used by native speakers of English.
4. In China I would suggest your using "will have graduated" when you are sitting an exam written by a Chinese teacher. (By the way, I don't like "suggest your using", but Chinese teachers of English would prefer it.)

Now, it is generally accepted that no college or university can educategraduate 改为they will have graduated.表示的确是将来完成时。 没

语法上,把graduation改成graduate即可