Hello Agniezska, Quick reminder: verbs take an -s in the 3rd person (he, she,it): he sings, she walks, it rains. However, some verbs take an -es ending: he goes, it does, she watches. Now, the correct sentence is: "He hopes that it will snow tomorrow." As a modal verb, will is always followed by a verb (infinitive form). This is the simple future form. If you must use "will be", then your sentence will be: "He hopes that it will be snowing tomorrow". This is the future continuous: will + auxiliary be + verb-ing. Alternatively, you can also say: "he hopes that there will be snow tomorrow". In this case, snow is a noun. I hope this helps! If you wish to discuss more grammar points in detail, feel free to visit my teaching page and send me a message: https://www.italki.com/teacher/4812990 Micha.

Hi Agnieszka, the correct sentence would be: He hopes that it will snow tomorrow. The future modal "will" is always followed by the base form of the verb ("snow"). And don't forget the "s" for the third person singular ("hopes")!