In Present perfect^x, Plurals^x, Past tenses^x

I have some problems,they are the phrases about time: yet, today, so far, to date, up to now, recently, lately, up to these few days, this morning, now, up to present. what do they mean? Are some of them duration? Do some of them represent sometime/some time in the past? yet: 1.up to the...

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...

Susan, I understand the frustration you are feeling. Your language, Chinese, is what linguists call an "isolating language". All information, such as the time an action occurred, is conveyed by the choice and order of words in a sentence. There are no verb tenses. There are no plurals. In fact,...