Unit 5 SectionⅡ Learning About Language-【状元桥·优质课堂】2023-2024学年新教材高中英语选择性必修第一册（人教版2019）

UNIT 5 WORKING THE LAND SectionⅡ Learning About Language 语法慧学·提升语言能力 答案解析P 主语从句 4.句4中的1t是 ,真正的主语是 探究发现 >>2 1.What it was to become was uncertain until 5.句7中how在从句中作 between 4.5 and 3.8 billion years ago when 要义详析 >>》 the dust settled into a solid globe. 2.(教材Pa)However,whether it was possible to 一、主语从句的定义 develop a hybrid of self-pollinating plans such 在主从复合句中充当主语的从句即主语从句。 as rice was a matter of great debate. What made people excited was that the solar 3.What is even more important is that as the ship had completed around-the-world trip.让人 earth cooled down,water began to appear on 们激动的是太阳能船已完成了环游世界的旅行。 its surface. It worried the woman that her son was always 4.(教材Po)Today,it is estimated that about60 playing computer games. percent of domestic rice consumption in China 儿子一直在玩电脑游戏，这让这个女人很担心。 is comprised of crops... 二、主语从句的连接词及其句法功能 5.What many scientists believe is that the continued L.连接词that和whether/if presence of water allowed the earth to dissolve (1)that在从句中不充当任何句子成分，本身 harmful gases and acids into the oceans and seas. 无任何意义，只起连接作用，但不可省略。 6.So whether life will continue on the earth for That she survived the accident is a miracle. millions of years to come will depend on 她在事故中幸免于难，简直是个奇迹。 whether this problem can be solved. (2)whether/if在从句中不充当任何句子成 7.P How this could be done was a challenging 分，起连接作用，意为“是否”，不可省略。 question at the time. Whether the plan will be carried out is still [自我感知] unknown. 1.以上黑体部分均在句中作 =It is still unknown if/whether the plan will 2.句1中的what在从句中作 :句3中 be carried out. 的what在从句中作 :句5中的wha1 这个计划是否会实施还不知道。 在从句中作 [名师指津]whether引导的主语从句既可放 3.句2、句6中的whether意为“ ”,在从 在句首，也可放在句尾，但f引导的主语从句 句中（充当/不充当）任何句子成分。 只能放在句尾，前面需用t作形式主语。 ·95 英语选择性必修第一册同步导学案 [即时训练门一补全句子 (3)明确名词性从句中所需要的成分及意义： (1)她能来帮助我们使我们很高兴。 (4)确定从句的引导词。 made us [即时训练2]一单句语法填空 very happy. (1) it was done was a mystery. (2)她来不来都无关紧要。 (2) John was late for the class has doesn't matter been unexplained. too much. (3) part of the country he will 2.连接代词(who,whose,whom,what,which, travel to needs