as的用法归纳ppt课件

4. 引导方式状语从句，
❖ “如”，“像”，“按照……的方式
❖ I want you to tell my friend your very interesting experience exactly as you have told it to me.
❖ 我想让你像给我讲述的那样，给我的朋友讲一讲你那段 极其有趣的经历。
❖ Just as the flying worm hit her face, she g ave a loud cry.
❖ 恰巧在飞虫撞到.她脸上时，她大哭起来。 6
2. 引导原因状语从句
❖ because 语气最强, 用于回答why 提出的或人们不知道的问题； ❖ as，一般放句首，语气弱，口语化，说明比较明显的原因； ❖ since书面语中，表对方已知的、或稍加分析便可得知的原因，
❖ The girl dance. s as she sings on the stage5.
❖ He looked behind from time to time as he went forward.
❖ 当他朝前走时，不时地向后看。
❖ As time went on / by, she became more a nd more worried.
❖ 随着时间的流逝，她变得越来越焦虑。
❖ As he grew older, he became more intelligent.
❖ 随着他年龄的增长，他变得更有才智了。
❖ I thought of it just as you opened your mo uth. 恰好在你开口时，我想到了它。
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1.引导时间状语从句
区别
时间
与主句谓语动 作
连词
whe n
点、段
先于、同时发生
只用as
while 段、过程
过程中、同时发 生
as
当…的 时候
同时进行
.
① 同一个人的两种动作交替进行, “一边…,一边…”。
② 两个同步发展的动作或为,
“随着”
③ 表示两个短促行为或事件几乎
同时发生。
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❖ John was having his dinner when I saw him.
有时译作“既然”。 ❖ for 表附加的解释、说明或推理。不放句首
❖ I do it because I like it. ❖ He didn’t go to school because he was ill. ❖ Since many of the customers work during the day, Billy
❖ Remember, you must do everything as I do.
❖ 记住，你必须按照我做的那样做一切。
❖ 注意：like在非正式语体中可以有与as相同的用法.
❖ I can’t sing like I used to.
has to collect the money at night. ❖ As he is a League member, he takes the lead in
everything in his class. ❖ As she has been ill perhaps she‘ll need some help. ❖ It must have rained. last night, for the ground is wet. 7
❖ 注意：当as引导让步状语从句时，句子的倒装语序有以下三种形式： ❖ (1). 形容词或副词+as+主语+连系动词be或实义动词。例如： ❖ Rich as he is, he never spends a cent on clothes. ❖ Much as I admire his courage, I don’t think he acted wisely. ❖ (2). 名词+as+主语+连系动词be (注意句首的名词不带冠词)。 ❖ Child as he is, he knows a lot. ❖ Boy as he was, he was chosen king. 。 ❖ (3). 实义动词+as+主语+助动词 ❖ Try as he may, he never succeeds. ❖ Change your mind as y. ou will, you will gain no additional suppor8t.
as用法归纳
.
1
adv.
引导时间状语从句 引导原因状语从句
conj.
引导让步状语从句
引导方式状语从句
as
prep.
引导比较状语从句
pron.
引导定语从句
固定用法
.
PRACTIC2E
一、作副词
“相同地”，“同样地”。 They don’t have as many airplanes.
他们没有同样多的飞机。 As before he remained unmoved. 他和以往一样无动于衷. The “h” is silent as in “hour”. 在hour这个词中, h不发音.
❖ 当我看到约翰的时候，他正在吃饭。
❖ She can write only when the baby is asleep.
❖ 只有婴儿睡着的时候，她才能写作。
❖ We must strike while the iron is hot. ❖ 趁热打铁。
❖ While we were reading, the teacher came in. 我们正在读书的时候，老师走了进来。
3. 引导让步状语从句
❖ “虽然，尽管”， ❖ although语气稍正式些，可放在句首，句中，不能再用but，但可以用yet； ❖ as所表示的语气较强，引导的让步状语从句用倒装语序； ❖ however引导让步状语从句时，后面可跟形容词或副词，也要用倒装语序。
❖ Although they are poor they are happy. ❖ Angry as he was, he managed to speak calmly. ❖ However hard the question is, he can answer it.