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Tham khảo tài liệu 'gmat exam success episode 1 part 9', ngoại ngữ, ngữ pháp tiếng anh phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | VERB FORMS PRESENT PAST PAST PARTICIPLE shake shook shaken take took taken forget forgot forgotten get got gotten give gave given forgive forgave forgiven forsake forsook forsaken hide hid hidden ride rode ridden write wrote written freeze froze frozen steal stole stolen SAME PRESENT AND PAST PARTICIPLE FORMS PRESENT PAST PAST PARTICIPLE come came come overcome overcame overcome run ran run In English as in many other languages the essential verb to be is also highly irregular SUBJECT PRESENT PAST PAST PARTICIPLE I am was have been you are were have been he she it is was has been we are were have been they are were have been 149 ----------------------------------- VERB FORMS -------------------------------------- Helping Verbs Helping verbs also called auxiliary verbs are essential to clear communication. They enable us to indicate exactly when an action took place or will take place and suggest very specific meanings such as the subject s ability to perform an action or intention to do something. Helping verbs are used to form the future e.g. will call and conditional tenses Future I will call you tomorrow with the results. Conditional If the results were promising Jamal would have requested another. The following table lists the helping verbs their forms and their meanings. Review this table carefully a helping verb can often significantly change the meaning of a sentence. PRESENT AND FUTURE PAST MEANING EXAMPLES will shall would intention She will meet us at the hotel. They said they would call first. can could ability I can be there in ten minutes. Rose could only find one glove. may might can could could might permission May I tag along Could we get together after the meeting should should have past participle recommendation We should leave before the snow starts. They should have known better. must have to had to necessity I must go to the dentist. I had to draw two models. should should have past participle expectation They should be on the next train. They
