比较状语从句
表示比较，由 than 或 as … as 引导。
more … than；as … as；not so/as … as
要点
- than 引导比较状语从句，后面常用省略形式。
- as … as 表示同级比较，中间用形容词或副词原级。
- 否定的同级比较用 not so/as … as。
- than 后面接代词时，口语用宾格，正式文体用主格加助动词。
- than 后面常常只剩下一块，省略的部分要补得回一个完整谓语：He is taller than his brother (is). —— 补不回就是句子写断了。
- 倍数排在 as … as 之前：This room is twice as big as that one. —— 中文"比…多一倍"与英文"是几倍"的算法差一层，细则在「倍数表达」那一条（批次 9 的 gid 133）。
- 比较从句的时态跟着它自己那件事走，不跟主句：The river is deeper than it was ten years ago. —— was 顶住的是十年前那个程度。
例句
She is more outgoing than me.
她比我更外向。
He works harder than I do.
他比我更努力。
My hair is longer than yours.
我的头发比你的长。
Most children grow up much faster than you think.
多数孩子长得比你以为的快得多。
He talks more than he works.
他说得多，做得少。
She spends more than she earns.
她花的比挣的多。
易错提示
- than me 和 than I do 都对，但 than I 后面要带助动词才完整。
- as … as 中间必须是原级，不能加 -er。
- than 与 then 是听写里最容易混的一对：older than me（比较）对 at that time（那时）—— 拼写差一个字母，作用毫无关系。