remain[ri'mein] 
v.  剩余, 逗留, 留下, 依然, 保持v.  We must learn to conserve what remains.
v.  我们必须学会保存那些剩余的资源。
v.  剩余
v.  We must learn to conserve what remains.
v.  我们必须学会保存那些剩余的资源。
v.  逗留
v.  I didn't remain long in the city.
v.  我没在那个城市逗留很长时间。
v.  留下
v.  Though the sore being healed, yet a scar may remain.
v.  伤口虽然痊愈, 却可能留下伤疤。
v.  依然
v.  The present international situation remains tense and turbulent.
v.  当前的国际局势依然紧张动荡。
v.  保持
v.  Most of the unearthed relics remain intact.
v.  大多数出土文物仍保持完好无损。
n.  剩余物, 遗迹, 残骸
n.  剩余物
n.  After maintenance the main remains and remainders are left on the domain.
n.  维修之后，主要遗骸和剩余物留在了领地上。
n.  遗迹
n.  They have found prehistoric remains.
n.  他们发现了史前遗迹。
n.  残骸
n.  The remains of the wooden hull are fragile and need special handling.
n.  木船体的残骸是很不牢固的，搬动时需要特别小心。
【词源解说】
14世纪晚期进入英语，直接源自古法语的remain；最初源自拉丁语的remanere：re(回)+manere(放，置），意为保留。【词形变化】动词过去式: remained 动词过去分词: remained
动词现在分词: remaining 动词第三人称单数: remains
【词义辨析】
remain, linger, stay
这些动词均有“停留，逗留”之意。
remain: 指某人或某物仍留在原处或保持原来的状态。
linger: 着重因愉快的事而使人不愿离开。
stay: 普通用词，多指人在某地暂时逗留。有时可指较长时间的居留。
【语法用法】
1.remain解释为“保持”，“依然”时，后常接表语。
He remained faithful to his wife all his life.
For a long time he remained a bachelor.
2.将I remain用在书信来往中，在客套话之前时，应注意：不可用于第一次写信中，最好用Ｉam。remain后面的yours是表语，虽中间无须加逗号，但人们仍习惯用。I remain的用法如今已经不普遍使用了。在商业信函中，表示客套一般用I (We) beg to remain。
1. 保持不变：继续保持同一种状态或情况：
vi.逗留/停留：remain (+ 介宾/副词)
These matters remain in doubt. 这些事情仍然值得怀疑
Only a few students remained in the classroom just now.
intact是什么意思2.To continue to be in the same place; stay or stay behind: 留下：逗留在同一地方；停留或者留下： We are remaining at home. 我们留在家里
3.To be left after the removal, loss, passage, or destruction of others:
余留：在其他事物移走，丢失，走开或毁坏之后仍留下来：
vi.剩下/残存：remain (+ 介宾/副词)如：Nothing remained on the road after a strong wind.
Only a few trees remain.See Synonyms at stay 1 只留下了一些树参见 stay1
4.To be left as still to be dealt with: 尚待：剩余的仍需要处理的：
A cure remains to be found. 尚待发现的疗法
5.To endure or persist. 持久或坚持
6.留下；遗留
I went to the city, but my brother remained at home. 我去了城市，可弟弟留在了家里。
vi.留待/尚待：此时它有两个固定句型如下：
固定句型一：sth/sb remain to be + 过去分词
固定句型二：It remain to be seen + whether引导的主语从句
如：The problem remained to be solved.
It remains to be seen whether he'll come or not tomorrow.
7.继续
Peter became a judge but John remained a fisherman.
彼得当了法官，但约翰仍然是个渔民。
He's determined to remain loyal to the team whatever comes his way.
他决心不管发生什么事都忠于球队。
The death of the innkeeper still remains a mystery. 客栈老板之死仍然是个谜。
sth. remain to be done意思是“...有待被做”
习惯用语：it remains to be seen 还要看情况发展
sb./sth. remain+ n./adj.意思是“...依然...”
sb. remain doing sth.意思是“...依然在做...”
vi.依旧/仍然: remain + 形容词/名词如：The secret remains unknown now.
remaining除了是remain的现在分词/动名词形式外，还可以单独做形容词，意思是“剩下的”。
如：You should finish your remaining homework.
remain作为“尚待/留待”
只能说“sth remain to be + 过去分词”，不能说“sth remain to do”。
所以是remain to be solved，而不是remain to solve.
keep on doing是一直做某事的意思
keep sb doing是让某人一直做某事的意思
keep sb from doing是不让某人做某事的意思
keep sth+adj\介词短语做宾补
keep off是离开
keep on about sth是继续谈论
hear/see(感官动词hear, notice, watch, see, find, feel, smell, look at, listen to；) +sb./sth. +doing/do/done
使役动词let, make+ sb do/ done；get sth done; get sb to do sth; have sb do; have sb doing; have sth done; leave sth undone; leave sb doing; keep sb doing; keep sb/sth done。
■v+ sb. doing sth.表示sb.正在做某事（主动）。
■v+ sb. do sth. 强调动作的全过程，即sb.做过某事
■v+ sb.+ ~ed(过去分词)，表示宾语与过去分词是被动关系（或完成）。
I saw him crossing the street..我看见他正穿过街道。
I saw him cross the street..我看见他穿过了街道。
I saw your little brother beaten by a big boy. 我看见你的小孩被一个大男孩打。
I want to make myself understood/heard by everyone.我想让每个人理解（听见）我。
I had my car fixed. 我让我的车修理了。
I had Tom fix my car. 我让TOM修我的车。
Don’t leave the water running when you wash your face.别让水一直流着。

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