陽光、燈、影、衣、冒 in，即在陽光下，在燈下，在樹陰下，穿衣、著裝、冒雨等都要用in。
例：Don't read in dim light. 切勿在暗淡的燈光下看書。
They are reviewing their lessons in the bright light. 他們在明亮的燈光下復習功課。
They are sitting in the shade of a tree. 他們坐在樹陰下乘涼。
a prisoner in irons 帶著鐐銬的囚犯
He went in the rain to meet me at the station. 他冒雨到車站去接我。
The poor dressed (clothed) in rags in old society. 舊社會窮人們衣衫襤褸．
以及：in the bright sunlight 在明亮的陽光下
a merchant in disguise 喬裝的商人
the woman in white (black, red, yellow) 穿著白(黑、紅、黃)色衣服的婦女
in uniform 穿著制服
in mourning 穿著喪服
in brown shoes 穿著棕色鞋
in his shirt sleeves 穿著襯衫
將來時態(tài)in...以后
例: They will come back in 10 days. 他們將10天以后回來。
I'll come round in a day or two. 我一兩天就回來。
We'll be back in no time. 我們一會兒就回來。
Come and see me in two days' time. 兩天后來看我。(從現(xiàn)在開始)
after... (從過去開始)
小處at大處in
例：Li and I arrived at Heishan county safe and sound, all is well. Don't worry. 李和我平安地到達黑山縣，一切很好，勿念。
I live in a great city (big city), my sister lives at a small town while my parents live at a village. 我住在大城市，我姐姐住在一個小城鎮(zhèn)，而我的父母則住在農(nóng)村。
I'm in Liaoning, at Anshan. 我住在遼寧省鞍山市．
