Modality While Speaking
Modal verbs are often used in speech because they express the speaker's attitude to the situation or events. So, you need to know very well the difference in the meaning of different verbs to speak correctly. That’s why we learned once more to express our thoughts semantically and grammatically correctly at the meeting of the English Grammar Club at Window on America in Kherson. Do not forget that the structure of the interrogative and negative modal sentences is different from ordinary ones.