A、where B、that C、to which D、the one
★★小试牛刀
That is the factory where produces 100,000TV sets a year. That is the factory that his father once worked.
I?ll never forget the days when we spent on that lonely island. I?ll never forget the day when/on which I joined the Party.
二、状语从句 一：时间状语从句
１，连词：when, while, as, till/until, before, after, since, once, as soon as ，every time, the moment, the minute， no sooner ..than hardly…when等 ２．五大考点：
考点 ⑴ when VS while VS as
★ 当….的时候 ★当…的时候 ★ 当….的时候
when while as ★一边….一边….
★趁着…时候 ★ 随着…
考点 ⑵ till / until ?直到….为止?
Eg. Mother waited for Tom till/ until it was far into the night. ( 持续性动词)
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Eg. Tom didn’t get back till / until everything was all right.(短暂性动词)
考点⑶ when 的两个句型
Sb is about to do sth when / Sb is doing sth when 考点 ⑷ since“ 自从”
句型：it is/ has been +一段时间＋since +从句 Eg. it is three days since I left Beijing. It has been 10 years since I smoked.
考点 ⑸ No sooner than/ hardly ..when/ scarcely..when 一 .就..用于句首要求倒装
Eg. No sooner had he arrived than he went away again. ★几种特殊句型结构的区别：
（1）It is/was + 时刻 + when从句“某事发生时是什么时候。”
（2）It is/has been + 时间段 + since从句“自从??以来有多长时间了。”
（3）It will/would be + 时间段 + before 从句“还要过多长时间??才??”
（4）It will/would not be + 时间段 + before 从句“过不了多长时间??就会??”
（5）It was + 时间段 + before从句“过了多长时间才??”
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（6）It was not + 时间段 + before从句“没过多长时间就??”
二、条件状语从句
1,连接词：if , unless( 如果..不，除非), so/as long as（只要）, on condition that（条件是），as (so) far as ( 据..所知), provided that（要是，如果）， in case(假使，如果)，等 ２．两大考点：
考点 ⑴ Once --- 一但……就……
Eg. Once you see him, you will never forget him. 考点 ⑵ In case --- 假使, 如果 The plane cannot take off in case it rains. 三，原因状语从句 1，连接词：
Because, since, as(放句首) , for, now that(既然，由于）, when(既然), considering that（顾及到---）, seeing that（由于）。（都表示原因，语气依次减弱） 2，考试聚焦
考点一、Because VS since VS for
Because: 表示“因为”，表示直接的或明确的原因; Since: 表示“既然”， 表示已知或显然的原因;
for : 不是从属连词，而是并列连词。它不是用来说明原因，而
是用来表示一种附带或补充解释、说明，不放在句首。
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Eg: It was because his mother was badly ill that he was unhappy. Since everyone makes mistakes in life, you needn’t scold him for it.
The day breaks, for the birds are singing. 考点二、 when 既然
Eg. How can you expect to learn anything when you never listen? 四，让步状语：
1.连接词:though/although（虽然）, as /though(虽然), even if/though(即使)whatever（无论什么）, wherever（无论哪里）, while (尽管)等引导。 2，考试聚焦：
考点一：though/although 不与but 连用, 但是他们都可以同yet (still) 连用. 所以though (although)…yet(still)的格式是正确的 考点二：while 尽管 eg. While I have sympathy for you, I can?t help you.
考点三：Whether ---不管，常与or not 连用
Eg. Whether he is good or not, the company decided to send him abroad.
考点四：no matter +疑问词相当于疑问词+ever: 不管…都… 五、地点状语从句: where/ wherever （wherever --- 无论哪里）
考点聚焦：地点状语从句和where定语从句的区别：
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Tips: 判断是定语从句还是地点状语从句，要看从句前是否有先行词，有先行词的是定语从句，否则是状语从句。
Eg. Where there is a will, there is a way. This is the factory where my father works. 六、结果状语从句
1. 连接词： so that（=in order to 因而）, so…that（.太..以至于），such…that（太…以至于） 2.考试聚焦：考点句型
(1) so + 形容词/副词+ that从句；
(2) such a/an + 形容词+可数名词单数+that从句; (3) so + 形容词+ a/an + 可数名词单数+that从句； （4）such + 形容词+ 可数名词复数/不可数名词+that从句 七、目的状语从句
1. 连接词：so that（以便）, in order that（为了）, for fear that（为了防止）, lest（以防）
Eg. He took the name down for fear that he should forget it. 八、比较状语从句 (倍数+the depth/height/width/weight of ) 1. 连接词：A. ….as…as… B. ….adj. + -er than… C. the more?the more?
Eg. This work is not as easy as you think
The more you work, the more you earn. He runs faster than i.
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