習語一般指那些常用在一起，具有特定形式的詞組，其蘊含的意義往往不能從詞組中單個詞的意思推測而得。通常包括成語、俗語、格言、歇后語、諺語、俚語、行話等。以下這篇
Idlenessistherootofallevil.懶惰是萬惡之源
Ifamanoncefall,allwilltreadonhim.人倒眾人踩
Ifitwerenotforhope,theheartwouldbreak.人若無希望，心碎肝腸斷
Ifwedream,everythingispossible.敢于夢想，一切都將成為可能。
Ifyourunaftertwohares,youwillcatchneither.同時追兩兔，全都抓不住
Illnewsfliesapace.惡事傳千里
Inforapenny,inforapound.一不做，二不休
Inthedeepestwateristhebestfishing.水深好釣魚
Intheend,thingswillmend.車到山前必有路
Itisafoolishsheepthatmakesthewolfhisconfessor.蠢羊才向狼懺悔
Itisbettertobealonethaninbadcompany.寧可孤獨，不交惡友
Itisbettertodowellthantosaywell.與其夸夸其談，不如埋頭苦干
Itiseasiertogetmoneythantokeepit..掙錢容易，積錢難
Itisgoodfishingintroubledwaters.混水好摸魚
Itisnevertoolatetolearn.活到老，學到老
Itisnevertoolatetomend.改過不嫌晚
Itisnousecryingoverspiltmilk.牛奶打潑，哭也無用（意同：覆水難收）
Itisthefirststepthatistroublesome.萬事起頭難
Itistoolatetoshutthestabledoorafterthehorsehasbeenstolen.失馬鎖慨，為時已晚
Itneverrainsbutitpours.不下則已，一下傾盆
Ittakestwotomakeaquarrel.一個巴掌拍不響
Jackofalltrades,masterofnone.樣樣皆通，樣樣稀松
Joysurfeitedturnstosorrow.樂極生悲
Judgenotabookbyitscover.評價一本書，不能憑封面
Judgenotfromappearance.人不可貌相
