求中學英語語法!即句型,時態之類的!請詳細說明,說得好,我今年高二,基礎很不好,需要惡補!

題目：

求中學英語語法!
即句型,時態之類的!請詳細說明,說得好,
我今年高二,基礎很不好,需要惡補!

解答：

一、 一般現在時：
1.概念：經常、反覆發生的動作或行爲及現在的某種狀況.
2.標誌詞：always,usually,often,sometimes,every week (day,year,month…),once a week,on Sundays,
3.基本結構：動詞 原形 （如主語爲第三人稱單數,動詞上要改爲第三人稱單數形式）
4.否定形式：am/is/are+not;此時態的謂語動詞若爲行爲動詞,則在其前加don't,如主語爲第三人稱單數,則用doesn't,同時還原行爲動詞.
6.例句：.It seldom snows here.
He is always ready to help others.
Action speaks louder than words.
二、 一般過去時：
1.概念：過去某個時間裡發生的動作或狀態；過去習慣性、經常性的動作、行爲.
2.標誌詞：ago,yesterday,the day before yesterday,last week,last(year,night,month…),in 1989,just now,at the age of 5,one day,long long ago
3.基本結構：be動詞；行爲動詞 的過去式
4.否定形式：was/were+not;在行爲動詞前加didn't,同時還原行爲動詞.
5.例句：She often came to help us in those days
三、 現在進行時：
1.概念：表示現階段或說話時正在進行的動作及行爲.
2.標誌詞：now,at this time,these days,etc.
3.基本結構：am/is/are+doing
4.例句：How are you feeling today?
四、 過去進行時：
1.概念：表示過去某段時間或某一時刻正在發生或進行的行爲或動作.
2.標誌詞：at this time yesterday,at that time或以when引導的謂語動詞是一般過去時的時間狀語等.
3.基本結構：was/were+doing
4.例句：When he came in,I was reading a newspaper.
五、 現在完成時：
1.概念：過去發生或已經完成的動作對現在造成的影響或結果,或從過去已經開始,持續到現在的動作或狀態.
2.標誌詞：recently,lately,since…for…,in the past few years,etc.
3.基本結構：have/has + done
4.例句：The countryside has changed a lot in the past few years.
六、 過去完成時：
1.概念：以過去某個時間爲標準,在此以前發生的動作或行爲,或在過去某動作之前完成的行爲,即「過去的過去」.
2.標誌詞：before,by the end of last year(term,month…),etc.
3.基本結構：had +過去分詞.
4.例句：As soon as we got to the station,the train had left.
七、 一般將來時：
1.概念：表示將要發生的動作或存在的狀態及打算、計劃或準備做某事.
2.標誌詞：tomorrow,next day(week,month,year…),soon,in a few minutes,by…,the day after tomorrow,etc.
3.基本結構：am/is/are/going to + do；will/shall + do.
4.例句：They are going to have a competition with us in studies.
八、 過去將來時：
1.概念：立足於過去某一時刻,從過去看將來,常用於賓語從句中.
2.標誌詞：the next day(morning,year…),the following month(week…),.
3.基本結構：was/were/going to + do；would/should + do.
4.例句：He said he would go to Beijing the next day6.