In Present perfect^x, Plurals^x, Auxiliaries^x

1. Use of present perfect tense and simple past tense Speakers of American English generally use the present perfect tense (have/has + past participle) far less than speakers of British English. In spoken American English it is very common to use the simple past tense as an alternative in...

Hi, Does + Subject + root verb ......? Yes, a1) is present tense. It usually describes a accepted fact or habitual behavior. The verb that follows an auxiliary must be a root verb. So it is wrong to generate a question like 'Does she has(incorrect) a sense of humor?' Instead, you should say 'Does...