专题06 重点语法归纳及专练02--2022年八年级英语下学期期末重难知识点串讲+精练（人教版）

2022年八年级下学期期末重难知识点串讲+精练 专题06 重点语法归纳及专练（二） 一、连词unless, as soon as, so/such...that...的用法 · unless 连词，“如果不; 除非”，可转换为 if...not, 引导条件状语从句，也遵循 “主将从现”原则。 · We'll go fishing unless it rains tomorrow.=We'll go fishing if it doesn't rain tomorrow. 假如明天不下雨，我们就去钓鱼。 · 【注意】如果 unless 引导的从句是否定句, 则 unless 不能用 if...not 互换。 · as soon as 的用法 · as soon as 意为 “一……就……”, 引导时间状语从句，等于 “the minute that...” · 【注意】含 as soon as 的复合句也要遵循“主将从现”原则。 · so/such...that...的用法 · so/such...that... “如此……以至于……”，引导结果状语从句。其中 so修饰形容词或副词, such修饰名词, that后从句为结果。 · 【注意】名词前有much, many, few, little修饰表示程度时，此时用 so 而不用 such。 · 区分so that与so...that... · “窍门”: “在一起”是 “目的”, “分开”是 “结果”。 【专练】 一、选择题 1．The young men all shouted “Happy New Year” ________ it was twelve o’clock. A．after B．as soon as C．if D．though 2．She says that she'll have to close the restaurant ______ business improves. A．if B．after C．unless D．when 3．It was the middle of the night ________ the noise woke me up. A．because B．if C．when D．although 4．---I’m afraid e-books might be bad for our eyes. ---Hmm, but they will be helpful for us_________we put them to good use. A．as soon as B．as long as C．even though D．so that 5．The movie Ne Zha is ________ educational ________ I want to see it again. A．so; that B．such; that C．too; to D．enough; to 二、完成句子 6．如果我们不小心地保护这些河流，它们就会变得越来越脏。 The rivers will become dirtier and dirtier ________ we protect them carefully. 7．迈克一放学回家就开始做饭。 Mike started cooking ________ ________ ________ he got home from school. 8．这书桌太重我拖不动。 This desk is___________ heavy___________ I can’t move it. 9．迈克买了一个照相机，为的是夏天他能拍许多照片。 Mike bought a camera ________ ________ he could take many pictures in summer. 10．这是一本很有趣的书，以至于我们大家都想看。 It is ________ an interesting book ________ all of us want to read. 二、形容词及副词比较级和最高级 · 比较级 · A+be+形容词比较级+than+B, 例：I am taller than my sister, but she is more active than me. “我比我的姐姐高，但是她比我更积极。” · A+实义动词+副词比较级+than+B, 例：Sam runs faster than Tom, but Tom gets up earlier than Sam. “Sam跑得比Tom快, 但是Tom起的比Sam早。” · 原级比较： · 肯定形式：A+be/实