记忆方法
另解：
词根ex向外的，pand谐音胖的，向外胖的，扩大，膨胀。
双解例句
小知识
The verb expand means to make something bigger or wider. It might refer to something concrete, as when you blow into a balloon and make it expand, or something more abstract, as when you study to expand your mind.
Expand is a combination of the Latin words ex-, meaning “out,” and pandere, “to spread.” The idea of spreading out was always there, though the current idea of something actually becoming larger was first recorded in the mid-17th century. Expand is a versatile word that can refer to anything getting bigger, from a nation's growing influence in a neighboring country to a waistline that needs a larger belt.
实用短语
常用短语
单词用法
expand既可用作及物动词，又可用作不及物动词，用作及物动词时可接名词或代词作宾语。
expand在口语里还可表示“变得亲切友好，变得乐于交谈”，这种单词用法多见于英式英语。
expand into扩大为
expand domestic demand扩大内需
expand on详述
词根词缀
前缀: ex-
1. 表示”出,出去”; 2. 表示”前面的,前任的”
adj.
exorbitant 过份的,过度的ex出,出去+orbit圆圈,轨道+ant……的→出轨的
explicit 详述的,明确的;坦率的;显然的ex出,出去+pli重叠+cit→把重叠的东西弄出
n.
export 出口商品ex出,出去+port港口→出港口→出口
ex-president 前任总统ex前+president总统→n.前任总统
ex-wife 前妻ex前+wife妻子→n.前妻
n.&v.
export 输出,出口ex出,出去+port港口→出港口→出口
exchange 交换, 调换, 兑换, 交流, 交易ex出,出去+change改变,兑换→变换出去→交换, 调换
v.
exhale 呼气ex出,出去+hale气→出气→呼气
exhume 掘出,挖出ex出,出去+hum土+e→出土→挖出
expand 扩张;张开, 发展ex出,出去+pand扩散→v. 扩张;张开, 发展
expel 赶出,逐出ex出,出去+pel推→推出去→逐出
expose 暴露ex出,出去+pose放→放出去→暴露
expurgate 净化;删去ex出,出去+purg纯洁,冲洗+ate做→冲洗出来→净化
extract 抽出,拔出ex出,出去+tract拉→拉出→拔出
exalt 使升高ex出,出去+alt高→高出来→升高
exceed 超过,超出ex出,出去+ceed走→走出→超出
excise 切除ex出,出去+cise切→切出→切除
exclude 排外ex出,出去+clud关闭+e→关出去→排外
同义词辨析
这些动词均有”增加，增大”或”扩大”之意。
同义词
同根词
词根：expand
adj.expanded扩充的；展开的
expansive广阔的；扩张的；豪爽的
expandable可膨胀的；可张开的
expansionist扩张主义的
expansible能扩张的；会膨胀的
adv.expansively辽阔地；可扩张地
n.expansion膨胀；阐述；扩张物
expanse宽阔；广阔的区域；苍天；膨胀扩张
expansionist领土扩张论者；扩张主义者
expansiveness豪爽；广阔；可膨胀性
expansionism扩张主义；扩张政策；膨胀主义
expansivity扩大性；膨胀系数；可膨胀性
vt.expanded扩大（expand的过去式）