Modal auxiliaries for class 10 th …

The verbs such as have and do , which are used with ordinary verbs to make tenses, passive forms, questions and negatives are called auxiliary verbs or auxiliaries. The verbs can , could , may , might , etc are used before ordinary verbs and express meanings such as permission, possibility etc. The modals such as can , could , will , must , etc are termed defective verbs because some Parts are wanting in them. They have his-s in the third person singular. They have no infinitive and -ing form. Example : The auxiliary ‘ be ‘ is used in the formation of the continuous tenses as; He is working. I was writing. The auxiliary ‘ have ‘ is used in the formation of the perfect tenses such as; He has worked. He has been working, and so on. The auxiliary ‘ shall ‘ is used in the first person and ‘ will ‘ in all persons to express pure future tense as; We will need the money on 15th, You will see that I am right. Modal Auxiliaries – Further Explanation Other helping verbs, called modal auxiliaries or modals, such as can, could, may, might, must, ought to, shall, should, will , and would , do not change form for different subjects. For instance, try substituting any of these modal auxiliaries for can with any of the subjects listed below. I can write well. You (singular) can write well. He can write well. We can write well. You (plural) They can write well. Uses of Can and Could