I can't understand why he is being so selfish. He isn't usually like that.
我不明白他此刻怎么这么自私。他平时不这样。
英语语法突破 200 句
一般现在时
📚 句中词汇解析
从本句中提取的重要词汇
vt.& vi. 懂，理解;
vt. 了解;默认;听说;领会;
💡 under(under)+stand→懂；了解；通晓；认为
"That's just an approximation, you understand."
你知道那仅仅是近似值。
近义：ideate, imagine, apprehend, interpret, assimilate, penetrate
反义：misapprehend, misconstrue, mishear, misinterpret, misrepresent, misread
adj. 自私的，利己的;
💡 self自己的 + ish 形容词后缀→ 自私的,利己的
"They painted him to be indecisive, negative, and selfish."
他被描绘成一个优柔寡断 、 消极又自私的人.
近义：opportunist, calculating, egocentric, egoistic, egoistical, egomaniacal
反义：liberal, loose, nobleminded, openhanded, selfless, ungrudging
adv. 通常，经常，平常，惯常地;一直，向来;动不动，一般;素;
💡 usual通常的+ly副词后缀→通常地，惯常地
"The discovery of distillation is usually accredited to the Arabs of the 11th century."
通常认为，蒸馏法是阿拉伯人在11世纪发明的。
近义：invariably, mostly, normally, oft, often, oftentimes
反义：infrequently, occasionally, seldom, sometimes