高中英語語法之容易混淆的時(shí)態(tài)比較
ten years before he came to our school.
本句中 work 的工作狀態(tài)延續(xù)了ten years，直到before he came to our school為止。
He ________( be ) ill for weeks when he asked for sick leave.
She told me she always_________( work in the countryside since she graduated from a college.
本句中 work in the countryside的工作狀態(tài)自graduated from a college開始，一直延續(xù)至she told me的時(shí)候。
3.在一段情景連貫的文字中，先發(fā)生的事放在后面敘述時(shí)，要用過去完成時(shí)。
She felt helpless,not knowing what to do. Her husband _________( die ) and left her no money.
她覺得孤立無援，不知所措，她丈夫去世了，沒留給她財(cái)產(chǎn)。
在本句中，she felt helpless…發(fā)生在過去，而 die 則發(fā)生在felt helpless之前。
4.表示過去未實(shí)現(xiàn)的希望、計(jì)劃、打算或原本的想法時(shí)用過去完成時(shí)。常用的.動(dòng)詞有think,suppose,hope,want,expect,plan等。
I ____________(think) he had died.
我原以為他已死了。
They _________(want) to catch the first bus,but they didn't get up early enough.
他們本想趕頭班車，但起得不夠早。
5.在賓語從句中，所敘述之事雖發(fā)生于主動(dòng)詞之前，但從句中有一個(gè)確定的表示過去的時(shí)間狀語時(shí)或敘述的是歷史事實(shí)時(shí)，從句中時(shí)態(tài)用一般過去時(shí)。
The teacher said that Columbus ________(discover) America in 1492.
老師說哥倫布在1492年發(fā)現(xiàn)了美洲。
句中的discovered發(fā)生在said之前，但不用過去完成時(shí)had discovered。
6.敘述過去發(fā)生的一連串的動(dòng)作或事件用and或but連接時(shí)，用一般過去時(shí)。
He ________(get) up, ________(dress) himself and then _________(go) downstairs to have breakfast.
他起身穿好衣服，然后就下樓吃早飯。
He ___________(buy) a volleyball but later _____(lose) it.
7.當(dāng)主動(dòng)詞與賓語從句中謂語動(dòng)詞同時(shí)發(fā)生時(shí)，從句謂語動(dòng)詞用一般過去時(shí)或過去進(jìn)行時(shí)。
He said he ________( know )several languages.
他說他懂好幾門外語。
He was not sure what they _________( do ) at that time.
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