have & has & had用于句子中有什么区别呢

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• Henry works in a big medicine factory now ,but he _in a hosipital for three years.A.workedB.has worked c.had been working D.had worked但是句子中有FOR 所以 为什么不选其他的答案呢？
• we had a good weend改成一般疑问句怎么改这个句子改成一般疑问句,我知道是用Did 开头,但是我不知道we要改成you吗?you 后面是加has 还是have呢?
• 初中英语几个句子Where he to leave,today,he wpuid get there by Friday.(为什么用Where he to leave,If he left呢)The shy girl would rather stay at home to go to a party.(would rather,than,为什么不可以换成prefer to)We would have finished the work if we had had time.(为什么是had had )How long has Jim kept the novel?--For a week.(为什么是kept)It is dood to take a long walk before going to bed.(为什么用going)Where he to leave today,he would get there by Friday.(If he left呢)It is good to take
• have has had是怎么回事,什么样子时在用什么?is are（was,were）呢?有什么句子示例吗
• He has had his hair cut.他（请人给他）理发了.请问这个地方第一个has 第二个had的意思是什么?他们有什么区别呢?那have sth done的固定用法是什么意思昵？能不能再出几个例子呢？
• 关于各种of which 和of them的句子!我自己研究了半天,总结出来是有谓语动词用which 没有谓语动词用them .这里的谓语动词我理解为am is are have has had was were 即空格后看到这些词选which 看不到选them .可我做题还是错了!我要烦死了!到底要怎样嘛?我搞这问题很久了!⑴I was given three books on cooking ,the first ( )I really enjoyed .这为什么选of which 而不是of them 我没看到我心中的谓语啊!⑵There are two buildings ,( )stands nearly a hundred feet high .这又为什么选the larger of which 而不是the larger of them 谓语呢?求帮忙啊我后天就期末考了第一门就考英语啊!
• 英语中当直接引语变成间接引语时,当句子中有if假如时,变成间接引语if后时态怎么变?为了弄清楚间接引语的用法,我想再构造个对话情景来弄明白,假如Mary星期6告诉jack如果星期日没其他事就来mary家,但是引用这句话的人说这句话的时候是星期日,直接引语是：mary told jack"if u have nothing important to do tomorrow,come to my house" 换成间接引语是 1,mary told jack to come to her house today if he has nothing important to do ,还是2,mary told jack to come to her house if he had nothing important to do,注意说话时间是星期日,1对还是2对?这也是现在引述过去所说的将来时,个人认为1正确,
• have & has & had用于句子中有什么区别呢
• Many a man ____ come to help us.A.have B.has C.does D.had为什么不选C呢?用于强调come不行么?
• 五、下列句子中有一般过去时和现在完成时.选出现在完成时的句子,并填上have或者has：1. I ________already listened to the news.2. She ________typed your letters an hour ago.3. He ________just cleaned his shoes.4. They ________emptied the basket this morning.5. Tom ________never been to Japan, but Lily was there in 1992.6. Carol and Mary________ already painted that bookcase.7. Mum ________already had a meal. She cooked it at 6 o’clock.8. We ________ metin the park ten minute ago.9. ________
• all I could think of was that the last thing I said to him in this life was goodbye.that
• 英语语法：many a person is playing basketball.