Elective affinity
[醫(yī)] 選擇性親[和]力
?? 詞語(yǔ)組成解析
elective
[i'lektiv]
adj. 選任的;有選舉權(quán)的;（課程）選修的;（可選擇的）可選擇的;
n. 選修課程;
affinity
[?'f?n?ti]
n. 密切關(guān)系，姻親關(guān)系;（男女之間的）吸引力，吸引人的異性;類同;類似，近似;
af近+fin范圍+ity名詞后綴→一再能進(jìn)[別人]范圍→親密 → 親戚；密切關(guān)系
??? 情景例句
Just because you major in English, don't think that you will have mastered real English.
不要以為你是英語(yǔ)專業(yè)的就能精通“真正”的英語(yǔ)。
Don't forget to put stamps on the letter before you mail it.
不要忘記在寄信以前把郵票貼在信封上。
They then knew that they had discovered the cause of the fire.
這時(shí)調(diào)查人員知道他們找到了發(fā)生火災(zāi)的原因了。