2022屆高考英語第一輪語法狀語從句專題教案
XX年高三一輪復(fù)習(xí)金子般的學(xué)案語法部分：狀語從句（新人教版）狀語從句是一個(gè)句子充當(dāng)另一個(gè)句子的狀語，表示主句動作發(fā)生的時(shí)間、條件、原因、方式、結(jié)果、目的等等。
狀語從句是歷年高考題的重點(diǎn)、難點(diǎn)。命題一般是考查學(xué)生連詞的掌握情況，根據(jù)兩個(gè)句子的意思，判斷兩個(gè)句子之間的邏輯關(guān)系，選擇合適的連詞。常見的狀語從句有九大類。要牢記不同的連詞的具體意思，是解題的關(guān)鍵。
一、時(shí)間狀語從句
常見連詞： when / while / as; before / after; since; until; as soon as / immediately / instantly / the
moment / the minute / the second; no sooner…than / hardly…when; the first time / every time / each time / next time
【完成例句】
(1)我正在做飯，這時(shí)，門鈴響了。
i was doing some cooking when the doorbell rang.[ ]
＝the doorbell rang when i was doing some cooking.
(2)我正要下班，這時(shí)，天開始下大雨了。
i was about to leave work when it began to rain heavily.
【結(jié)論1】when 通常意思為：當(dāng)……時(shí)候； 正在那時(shí)……
【完成例句】[ ]
(3)你在北京期間能否給我收集一些紅樹葉？
while you are in beijing, can you collect some red leaves for me?
(4)那個(gè)男孩在過馬路時(shí)被迎面駛來的小轎車撞了。
while walking across the street, the boy was knocked over by a running car.
【結(jié)論2】 while從句只能用延續(xù)性動詞，意思為：在……期間。
【翻譯句子】
(5)as time goes by, we are growing wiser and wiser.
隨著時(shí)間的推移，我們變得越來越聰明了。
(6)she does her homework as she sings.
她一邊寫作業(yè)，一邊唱歌。
【結(jié)論3】as 表示主句和從句的動作幾乎同步進(jìn)行。意思為：一邊……，一邊……； 隨著……
【完成例句】
(7)我還沒到家就覺得餓了。(在到家之前就覺得餓)
i had felt hungry before i arrived home.
(8)我還沒來得及向她道歉，她就離開了辦公室。(在我能夠說抱歉之前，她就離開了辦公室)
she left the office before i could say sorry to her.
(9)還要過很久我們才能畢業(yè)。
it will be long before we graduate.
【結(jié)論4】 before 在……之前 ；還沒來得及……才
【完成例句】
(10)我來上海已經(jīng)4年了。
it's / has been four years since i came to shanghai.
【結(jié)論5】 since “自從……以來”；是現(xiàn)在完成時(shí)的標(biāo)志。
【注意】從句中延續(xù)性動詞意義為否定。
例：①我當(dāng)醫(yī)生已經(jīng)3年了。(自從我成為醫(yī)生以來，時(shí)間已經(jīng)過去3年了。)
it is three years since i became a doctor
②他不當(dāng)醫(yī)生已經(jīng)3年了。
it is three years since he was a doctor.