介词“in”的用法
1: 年、月、年月、季节、周即在"来年"，在"某月"，在"某年某月" (但在某年某月某日则用on)，在四季，在第几周等都要用in。
例；in 1986 在1986年
in 1927 在1927年
in April 在四月
in March 在三月
in December 1986 1986年12月
in July l983 1983年7月
in spring 在春季 in summer 在夏季
in autumn 在秋季 in winter 在冬季
in the fist week of this semester 这学期的第一周
in the third week 在第三周
2: 阳光、灯、影、衣、冒 in，即在阳光下，在灯下，在树阴下，穿衣、着装、冒雨等都要用in。
例：Don't read in dim light. 切勿在暗淡的灯光下看书。
They are reviewing their lessons in the bright light. 他们在明亮的灯光下复习功课。
They are sitting in the shade of a tree. 他们坐在树阴下乘凉。
a prisoner in irons带着镣铐的囚犯
He went in the rain to meet me at the station. 他冒雨到车站去接我。
The poor dressed (clothed) in rags in old society.旧社会穷人们衣衫褴褛．
以及：in the bright sunlight在明亮的阳光下
a merchant in disguise 乔装的商人
the woman in white (black, red, yellow) 穿着白(黑、红、黄)色衣服的妇女
in uniform 穿着制服
in mourning 穿着丧服
in brown shoes 穿着棕色鞋
in his shirt sleeves 穿着衬衫
3: 将来时态in...以后
例: They will come back in 10 days. 他们将10天以后回来。
I'll come round in a day or two. 我一两天就回来。
We'll be back in no time. 我们一会儿就回来。
Come and see me in two days' time. 两天后来看我。(从现在开始)
after... (从过去开始)
4: 有形with无形by，语言、单位、材料in
例：The workers are paving a road ______ stone. 工人们正用石子铺路。(有形) The teacher is correcting the paper with a new pen=________. 这位教师正用一支新笔批改论文。(有形)
I wrote a novel in Russian. 我用俄语写了一本小说。
The length is measured in meter, kilometre, and centimeter=_________________ 长度是以米、公里、厘米为单位来计算的。(同上)
This board was cast in bronze not in gold. 这个牌匾是铜铸的，不是金铸的。
5: 特征、方面与方式、心情、成语惯用in 特征或状态：
例: The Democratic Party was then in power. 那时民主党执政。
He has not been in good health for some years. 他几年来身体一直不好。
Many who came in despair went away in hope. 许多人带着绝望情绪而来，却满怀希望
而去。
The house was in ruins.这房屋成了废墟。
The poor girl was in tears. 这个贫苦女孩泪流满面。
Her clothes were in rags. 她的衣跟穿破了。
She spoke in grief rather than in ange r. 与其说她讲得很气愤，不如说她讲得很伤心。还有一些短语也用in，如：
in jest 诙谐地，in joke 开玩笑地，in spite 恶意地， in fairness 公正地，in revenge 报复, in mercy 宽大，in sorrow 伤心地等。
Today everybody is in high spirits and no one is in low ebb. 今天大家都兴高采烈，没有一个情绪低落的。
She and her classmates are ____ flower ages. 她和她的同学都正值妙龄。
如下成语惯用in
in all _______
in the meantime 与此同时
=_______________
in place 适当地
in hopes of(或in _____ hope of) 怀着.......希望
in connection with 和……有关
in contact with 和……联系
in addition to 除......以外
in _____ of 倘若，万一
in_______ with 和......冲突
in force 有效的，大批
in depth 彻底地;________
in regard to _________
in the neighborhood of 大约、邻近in the least 一点，丝毫
in alarm 惊慌、担心
in the opinion of 据……见解
=_________
in the long run ________
in one's opinion 在……看来
in word 口头上 / in a word______ in vain ________
in case 如果，万一，以防
in _______ 详细地
in conclusion 总之
in spite of =________
in other words... 换句话说
in return _________
in the name of 以......名义
be confident in 对......有信心
be interested in 对......感兴趣
in doubt 怀疑
in love 恋爱中in debt_____sb 负债
in fun (jest、joke) 玩笑地
in hesitation _in wonder 在惊奇中in public (secret) 公开他(秘密地) in a good humour 心情(情绪)好
in _____ of 就某事来说
in______ of负责
in ______of 纪念
in_______ of寻找
in_______of需要
in_______of支持
in_______of代替
in_______of支持
in_______of称赞
in_____hurry
in______ sense
in______way
in fashion
in_____ same way
_____ advance
_____addition to
In the air_______
_____ brief
In______ with相同
In conclusion_______
In connection_____
In_________ condition
Indspair______
In_____ distance
In the course of_______
____ trouble
____ fact= as___ matter of fact
In _____ form of
In ____ future
