For example, CAN represents possibilities, permissions, and functions. They are very sensitive to the situation, but some of them overlap: you should see a doctor: you should see a doctor. This is the result of an ongoing process called "speech change". It is the most difficult part of English grammar to explain and learn modal verbs to foreign language learners. Modality is associated with certain practical uses such as requests, offers, promises, and those distant forms that tend to be provisional and courteous ("possible" such as "distant form"). Therefore, "can", especially "can", indicates that there is a possibility that it is often used for POLITE REQUESTS. Can you open the window?
Another feature of the verb method leading to difficulties is the right choice of aspects. Modal verbs are widely used in English to convey the meaning of meaning from the viewpoints of compulsion, ability, permission, possibility, hypothesis and so on. For example, learners have problems in understanding these differences. He must do this and he must do it. Grammar - Other: Verbs are not only basically nonreflective in English, but also nouns, pronouns and adjectives. Articles and other decision makers will never change their format *. Because German has many distortions in each word class, this makes it easier to avoid errors in English than in German.