14.原因和目的状语从句-2025-2026学年英语期末语法复习九年级全册（北师大版）

期末语法复习 9上·北师大版·原因(because/since)和目的状语从句(sothat) 一、 原因(because/since)和目的状语从句(so that)核心用 法详解 二、 核心考点解析·考点1 考点：because引导原因状语从句的基本用法 规则：because表示直接原因，语气较强，常用来回答why引导的问句，从句可置于句 首或句末（句首时需用逗号隔开）。 真题再现（选择，北师大九上期末真题改编）： Why did you late for class?-I missed the early bus. A)So B)Because C)Since D)So that 答案：B 例题练习： He didn't go to school yesterday he was ill 答案：because 三、核心考点解析·考点2 考点：since引导原因状语从句的用法 规则：sce表示“既然”，语气较弱，强调已知的、显而易见的原因，通常置于句首。 真题再现（选择）： everyone is here,let's start the meeting. A)Because B)So that C)Since D)So 答案：C 例题练习 -you know the answer,please tell us. 答案：Since 四、核心考点解析·考点3 考点：so that引导目的状语从句的基本用法 规则：so that表示“为了，以便”，引导目的状语从句，从句中常含情态动词 can/cold/may/might/wil/would等。 真题再现（选择）： She studies hardshe can get good grades. A)because B)so that C)since D)but 答案：B 例题练习： I get up early I can catch the first train. 答案：so that 五、核心考点解析·考点4 考点：because与so的区别 规则：because和so不能同时出现在一个句子中，because表原因，so表结果，二者只 能用其一。 真题再现（改错）： Because he is tired,so he wants to rest. 答案：删去so或Because 六、核心考点解析·考点5 考点：so that引导目的状语从句与结果状语从句的区别 规则：so that引导目的状语从句时，从句含情态动词，表“目的”；引导结果状语从句 时，从句不含情态动词，表“结果”，常与too.to./smch.hat..转换。 真题再现（选择）： He ran fast he won the race. A)so that(目的) B)so that(结果) C)because D)since 答案：B 二、考点综合训练 (一)单项选择 1.-Why didn't you join the party last night?-I had to finish my homework. A)So B)Because C)Since D)So that 2.you have finished your work,you can go home early. A)Because B)So that C)Since D)So 3.She saved money every month-she could buy a new bike A)because B)so that C)since D)but 4.He was late for school he missed the bus. A)so that B)because C)since D)so 5.The teacher spoke slowlyall students could understand her. A)so that(目的) B)so that（结果) C)because D)since 6.it was raining heavily,we decided to stay at home. A)Because B)So C)Since D)So that 7.He ran as fast as he could he arrived at the station on time. A)so that(目的) B)so that(结果) C)because D)since (二)语法填空 1.We started early we could catch the first train. 2.you know the truth,please don't tell anyone else. 3.He didn't attend the meeting he was seriously ill. 4.They study hard_they can pass the final exam. 5.the weather is fine,let's go for a walk (三)句型转换 1.Because she was ill,she didn't go to school.(改为同义句，用so连接) She was ill,-she didn't go to school. 2.He gets up early every day so that he can do morning exercises.(对划线部分提问) -does he get up early every day? 3.He1 an fast so that he won the race.（改为同义句，用such.that.) He ran fast he won the race. (四)篇章填空 Lisa wants to be a doctor when she grows up.1.-she loves helping people,she studies bi- ology very hard every day.She reads medical books for hours 2.she can learn more about the human body.3.her parents are both doctors,they often tell her stories about saving pa- tients.Lisa also practices first aid skills after school 4.-she can help others in emergencies. Last week,she saved a little girl who fell off her bike-she acted quickly 5.the girl didn't get seriously hurt. (五)参考答案与解析 1.单项选择答案：1.B2.C3.B4.B5.A6.A7.B 2.语法填空答案： 1.so that 2.Since 3.because 4.so that 5.Since 3.句型转换答案： 1.so 2.Why 3.so;that 4.篇章填空答案： 1.Because2.so that3.Since4.so that5.so that（结果) 英语语法复习手册·9上·北师大版·原因(because/since)和目的状语从句（so that)