时间与原因状语从句市公开课金奖市赛课一等奖课件

1、 Adverbial clausesof time / reason（时间、原因状语从句）1第1页Adverbial clause of time:when, while, asbefore, aftersince, till/until, by the timeas soon as = the moment hardlywhen = no soonerthanthe first time, every/each timewhenever等 2第2页when (特定时间或一段时间) 当时侯-When I was a boy, I rode to school. -When the lesson

2、 was over, we walked out of the lab. 就在那时 -I was doing my homework when the light suddenly went off.-He was about to sleep when someone knocked at the door.when / while / as区分过去进行时过去未来时3第3页while (一段时间) 当时侯(从句谓语必须是连续性动词, 用进行时或“be+表语”)-While Mary was cooking, the children were playing outside. -Strike

3、 while the iron is hot. 然而 (并列句, 侧重对比)-You are sitting while I am standing. 即使(让步状语从句, 放句首)-While I admit his good points, I can see his shortcomings. when / while / as区分趁热打铁。4第4页as 当时侯(侧重同时发生)-As I was a child, I showed much interest in insects. 一边一边-He often does homework as he listens to music. 伴

4、随. -As times goes on, Im getting older and older.when / while / as区分5第5页-It was midnight before he came back.午夜他才回来。-Before I could say a word, she had run out of the room.没等我开口, 她就跑出了房间。before使用方法before有时译成“(之后)才”, “还等就” 6第6页before使用方法-It will be five years before I come back.我五年之后才能回来。-It was not

5、long before the enemy was driven out of their country.很快之后敌人就被赶出了他们国家。It + be + 一段时间 + before 句型“在之后才”注意:主句用否定式，译成“不多久就”-It wont be long before they understand each other.很快他们就会相互了解。时态主将从现或前过后过7第7页-It is/has been 11 years since I came to Shanghai. -It is/has been three years since I joined the Party

6、. It is/has been + 一段时间 + since 句型 “自从.以来已经有.(时间)了”since使用方法注意:主句时态 从句时态普通现在时/现在完成时普通过去时8第8页直到他生病他才意识到健康主要性。(Not until)-Not until he was ill did he realize the importance of health.-It was not until he was ill that he realized练一练半倒9第9页by the time 主句时态？-By the time he was fourteen, he _ (teach) himse

7、lf advanced mathematics.想一想过去完成时或未来完成时had taught10第10页the momentthe minutethe instantimmediatelydirectly一就as soon as-I recognized her the moment I saw her.-He cried the moment he heard the bad news.11第11页HardlywhenNo soonerthanScarcelywhen一就as soon as-Hardly/Scarcely had I got home when it began to

8、rain.-No sooner had I sat down than he stepped in.12第12页HardlywhenNo soonerthan注意:时态搭配及拼写半倒语序前过去完成时后普通过去时我一进房间就听见他哭声。(Hardly)-Hardly had I entered the room when I heard his cry.助动词或情态动词提到主语前13第13页-I thought her nice and honest the first time when I met her.-Every time I went to his house, he was out

9、.-Next time I see you, Ill show you my new apartment. the first time 第一次every/each time 每次next time 下一次名词短语=连词, 直接加句子14第14页全部时间状语从句谓语都不用未来时，即所谓“主将从现”。 15第15页II. Adverbial clause of reason:becauseassince, fornow that等 16第16页because / as / since /, for区分because “因为”直接原因, 回答why, 语气最强-He didnt come because he was ill.as “因为”显著原因, 语气最弱-As it is raining, wed better stay inside.17第17页because / as / since /, for区分since “既然”= now that 已知原因,