1
lop off sth / lop sth off
lop off 是及物短语动词，宾语为代词时必须放在 off 前面，如 lop it off。
He lopped off the dead branches with a saw.
他用锯子砍掉了枯枝。
砍掉；剪掉
lopping — present participle of lop
先理解核心含义，再看它在真实句子里的用法。
砍掉；剪掉
cut off
He lopped off the dead branches with a saw.
他用锯子砍掉了枯枝。
常与 off 连用
切掉某物的顶部或最外端部分,尤指修剪灌木或树木的小枝,或有时指斩首某人。
To cut off as the top or extreme part of anything, especially to prune a small limb off a shrub or tree, or sometimes to behead someone.
向下垂；悬垂；向一侧倾斜。
To hang downward; to be pendent; to lean to one side.
使垂下。
To allow to hang down.
lop
Base
原形
lops
3rd person
第三人称单数
lopping
-ing
现在分词
lopped
Past
过去式
lopped
Past participle
过去分词
I lop the dead branches off the tree every spring.
每年春天我都会砍掉树上枯死的树枝。
He lopped a large branch from the oak yesterday.
他昨天从橡树上砍下一根大树枝。
They have lopped the hedge to keep it neat.
他们已经修剪了树篱，使其保持整齐。
lop 表示“砍掉、剪去（树枝等）”，属于规则动词；重读闭音节结尾，加 -ed/-ing 时需双写 p。
After the storm, we lopped the broken branches from the apple tree.
暴风雨过后，我们从苹果树上砍掉了折断的树枝。
The gardener is lopping the hedge to keep it neat.
园丁正在修剪树篱，让它保持整洁。
You should lop off any dead leaves before watering the plant.
你应该在给植物浇水前剪掉枯叶。
lop off 是及物短语动词，宾语为代词时必须放在 off 前面，如 lop it off。
He lopped off the dead branches with a saw.
他用锯子砍掉了枯枝。
from 表示来源，强调从整体上剪下。
Lop the damaged leaves from the plant.
把受损的叶子从植株上剪掉。
作“修剪”讲时指剪去多余的枝条以促进生长或保持形状。
The gardener lopped the hedge to keep it neat.
园丁修剪了树篱，让它保持整齐。
Not this
He loped the branches to make the tree neater.
Use this
He lopped the branches to make the tree neater.
lop 是重读闭音节，词尾只有一个辅音字母 p，过去式/过去分词需双写 p 再加 -ed，即 lopped。loped 是 lope（轻快奔跑）的过去式，拼写相近但意思完全不同，属于误用。
Not this
We need to lop down the dead branches before winter.
Use this
We need to lop off the dead branches before winter.
表示从整体上剪掉或砍掉时，lop 常与 off 搭配（lop sth off），强调分离；down 是受汉语“砍下”中“下”字直译而来的中式表达，不符合英语搭配。
Not this
The workers lopped the tree to clear the land for the new road.
Use this
The workers felled the tree to clear the land for the new road.
lop 只指修剪、截去树枝，并不表示把整棵树砍倒。汉语“砍伐”易使人误用 lop，但英语中“砍倒整棵树”应用 fell 或 cut down。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
砍掉，剪掉
She lopped off the overhanging branch.
她砍掉了伸出来的树枝。
修剪树枝
The men lopped branches from the fallen tree.
那些人从倒下的树上砍下树枝。
修剪树木
We lopped the old tree to let in more light.
我们修剪了那棵老树，让更多光照进来。
修剪枝叶和树梢
The workers lopped and topped the young trees.
工人们给幼树修枝打顶。
砍掉；削减
He lopped off the overhanging branches.
他砍掉了悬垂的树枝。
剪掉；割除
She lopped away the dead leaves.
她剪掉了枯叶。
Use lopping naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
把树枝“lop”剪掉时，枝条应声而“落”（音近联想）：一刀砍下，枝干垂落。
语域：neutral 常见场景：gardening、tree pruning、forestry lop 作动词表示“砍掉、剪掉”或“修剪”，多用于园艺、林业等场景，语气中性。日常口语中较少见，更常用 cut off 或 trim。
过去式和过去分词也可写作 lopt。
Dictionary facts from ECDICT, WIKTIONARY.