暑假自学课第2讲+从句与连词（讲义）-2026-2027学年人教版英语九年级全一册
新九年级暑假自学课
人教版2024 · 暑假衔接专用
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第2讲
从句与连词
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⊙ 适用年级：新九年级（八升九）
⊙ 教材版本：人教版2024
⊙ 内容说明：系统复习宾语从句、定语从句和状语从句的核心用法
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Part 1 温故知新 —— 状语从句
一、时间状语从句
引导词：when, while, before, after, as soon as, until/till
连词 | 用法与例句 |
when | 当……时（可接短暂/延续动词）。When I arrived, she was leaving. |
while | 当……期间（接延续动词）。While I was reading, he came in. |
before | 在……之前。Turn off the lights before you leave. |
after | 在……之后。After he finished his work, he went home. |
as soon as | 一……就……（主将从现）。I will call you as soon as I get there. |
until/till | 直到……。He waited until the rain stopped. |
not...until | 直到……才。He didn't go to bed until his mother came back. |
二、条件状语从句
引导词：if（如果），unless（除非，如果不=if...not）
核心规则——主将从现：主句用将来时/情态动词，从句用一般现在时。
-- If it rains tomorrow, we will stay at home.
-- You will fail the exam unless you study hard.（= if you don't study hard）
三、原因状语从句
引导词：because（因为），since（既然），as（由于）
-- because表直接原因：He didn't come to school because he was ill.
-- since表已知原因：Since everyone is here, let's begin the meeting.
-- as表伴随原因：As it was raining, we stayed at home.
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注意：because / so 不能同时使用！中文"因为……所以"在英语中只能用一个。
Part 2 习新知法 —— 宾语从句 & 定语从句
一、宾语从句（中考必考！）
宾语从句：用一个完整的句子充当主句的宾语。
1. 引导词
引导词 | 适用范围 | 例句 |
that（可省略） | 陈述句充当宾语 | I think (that) he is right. |
if / whether | 一般疑问句充当宾语（"是否"） | I don't know if he will come. |
whether...or not | "是否"的强调形式 | I wonder whether he is right or not. |
特殊疑问词 | 特殊疑问句充当宾语 | Can you tell me where the library is? |
【注意】whether可以和or not连用，if不能：I don't know whether he will come or not.（不能用if）
2. 宾语从句三大考点
考点一：语序——宾语从句必须用陈述语序（主语+谓语），不能有疑问语序的倒装！
✗ I don't know where is the library.
✓ I don't know where the library is.
✗ Can you tell me what should I do?
✓ Can you tell me what I should do?
考点二：时态呼应
主句时态 | 从句时态 | 例句 |
一般现在时 | 根据实际情况（任意时态） | He says he will go to Beijing tomorrow. / I know he lived |
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