Meat and fish
Discussion
Language level
Topics
Are you ready to take your vocabulary to the next level?
Join thousands of learners from around the world who are making great progress with their English vocabulary with our online courses.
Hello Inqilab,
A few days ago you asked a similar question about a sentence with a present continuous form. I explained that it had a passive infinitive. This example also has a passive infinitive.
must refresh = must + infinitive
must be refreshed = must + passive infinitive
Peter
The LearnEnglish Team