高中時間狀語從句及練習(xí)(含答案)

1、狀語從句狀語從句在句中作狀語，修飾主句中的動詞、形容詞或副詞等。狀語從句放在主句之前時，常用逗號分開;放在主句之后，一般不用逗號。狀語從句按其意義和作用可分為時間、原因、地點、條件、讓步、目的、結(jié)果、方式、比較等 9 種。1.時間狀語從句時間狀語從句表示主句動作發(fā)生的時間，主要由 when，while，as ; before, after; till (until); once, by the time, as soon as, no

2、sooner ... than 和 hardly ... when 及名詞詞組 the moment等引導(dǎo)。1) when“在……的時候”; while “在……期間”; as “正當(dāng)……的時候” when 意為“在……的時候” ，強調(diào)“特定時間” 。 When spring came, he felt like a trip. When he was eating his breakfast, he heard the doorbel

3、l ring.說明：連詞 when 在狀語從句中還有如下幾種含義： ①表示突然發(fā)生的事，含義為“（正在……時）忽然”。 I was just coming along to see you when I ran into Wilson.I had been working a couple of months when I had a letter from Jane.②表示過早發(fā)生某事，意為“（還沒……）就” 。此含義有時可用 bef

4、ore 代替。I hadn’t been reading for half an hour when I heard steps outside.我剛讀了不到半個小時就聽到外面有腳步聲。I had been there little more than a week when I set to work in earnest.③表示“在……的情況下” ，?？勺g為“雖然” ， “既然” ， “如果” 。 She refuses help

5、when (although) she has many friends.Why do you walk when (since) you have a car?How can I help them to understand when (if) they won’t listen to me.④后接虛擬結(jié)構(gòu)，含義為“本可以，應(yīng)該……” 。 He stopped trying when he might have succeeded

6、next time.They were playing when they could have been working.while 意為“在……期間” ，從句用持續(xù)性動詞，表時間的一段，而不是一點。 While he was eating his breakfast, he heard the doorbell ring. We must strike while the iron is hot.說明：連詞 while 在狀語從句中

7、還有如下幾種含義：①意為“然而，但是” ，表示前后對照，說明兩種情況相反 Tom is very outgoing, while Jane is shy and quiet.Some people waste food while others haven’t enough.after 引導(dǎo)狀語從句，用于表示主句和從句兩個動作的先后關(guān)系：I found the letter long after he had gone away.Aft

8、er we had finished tea we all sat on the grass.為表示兩個動作緊接著發(fā)生，從句可用過去時代替過去完成時：After she finished her work, she hurried to the nursery to pick up her child.I told them the news after you left,3) till/until，since, once, by th

9、e timetill 與 until ?？蓳Q用。但 until 可用于句首，till 不能用于句首。① till/until 意為“直到” ，用于主句為肯定句的表持續(xù)的謂語動詞，如 live，last, stand, stay, wait, work 等時，表示主句的動作延續(xù)到從句所表達(dá)的動作發(fā)生為止，意為“一直到…………時” 。He worked until it was dark.他一直工作到天黑。She stood there u

10、ntil he had passed out of sight.她站在那兒直到 再也看不見他。In British law the accused is presumed to be innocent until he is proved to be guilty.在英國的法律中，被告的罪狀在被證實之前 他被推定是無罪的。說明：若主句為肯定句的非持續(xù)動詞，只用 before,表示時間上“先于” 。He applied three tim

11、es before he was finally admitted to the university.He made a mistake, but he corrected the situation before it got worse.② till/until 用于主句為否定句的表非持續(xù)的謂語動詞，如 begin，become, get up, reach, start等時，until 表達(dá)的一般是“主句動作的起點” 意為“直到

12、……才” ， “在……之前（不） ” 。He did not get up till his mother came in.直到母親進(jìn)來時他才起床。No man really becomes a fool until he stops asking questions.人要是不再發(fā)問，就會變得愚蠢。Do not start until I give the word. 接到我的命令前不要動身。說明: 主句為否定的非持續(xù)動詞，until

13、與 before 均可使用，但含義略有區(qū)別：He didn’t arrive until I returned.他直到我回來才到達(dá)。He didn’t arrive before I returned.在我回來之前他尚未到達(dá)。③It was not until…that…是“not until”的強調(diào)形式，不用倒裝。It was not until he saw his mother that he realized how old s

14、he had become.直到看見母親，他才意識到母親已經(jīng)變老了。It was not until I had read your letter that I understood the true state of affairs.直到讀了你的信，我才明白事實的真相。 since 意為“自從……以來” ，用于表示時間，要注意以下幾點：① since 從句后常用一般過去時，通常為非持續(xù)性動詞，表示主句(現(xiàn)在完成時或現(xiàn)在完成進(jìn)行時)動作