lonely
单词辨析：
可用于修饰人或事物，只作定语。
a lone flight
单独飞行
He lives a lone life in the country.
他孤身一人在乡下生活。
A lone gull flew across the sky.
一只孤单的海鸥从天空飞过。
指独自一人的，或因没有亲友相伴而孤单寂寞的，只作表语。
She was alone in the classroom.
她独自一人在教室里。
He feels lonely when he is alone.
他一个人的时候，就感到孤独。
He felt all alone in the world.
他感到自己在这个世界上无依无靠。
语义强烈，指某人极度孤独悲伤的；也指某地因无人居住而荒凉的。
I felt so desolate and so angry.
我感到无比悲愤。
It was sparsely wooded and desolate.
这里树木稀少，荒无人烟。
指感到寂寞的或在孤单中度过的；也指地方人迹罕至的，只作定语。
The lonely child longs for the caress of his mother.
这个孤独的孩子渴望母亲的爱抚。
He has so few friends that his life is very lonely.
他的朋友很少，因此生活很孤单。
We found a lonely road.
我们发现了一条偏僻的道路。
与 lonely 基本同义，常可换用。
She felt lonesome/lonely without children.
没有孩子，她一个人感到很寂寞。
It is a lonesome/lonely spot near the canyon.
那是靠近峡谷的一个人烟稀少的地方。
指单独做某事的或无其他人、事物等相伴的；形容人、动物等时可指生性孤僻的，通常作定语。
She led a solitary life.
她过着独居生活。
Pandas are solitary creatures.
熊猫是喜欢独处的动物。
相关例句：
He's very lonely living all by himself.
他一个人住着很冷清。
He kept her from being lonely
他不让她感到孤独。
He seemed to me very young and very lonely.
我觉得他似乎非常年轻，非常孤独。
She replied to a lonely hearts ad.
她回应了一则征友广告。
He wished that he could be like other children instead of pursuing his lonely predestined path.
他希望他能够像其他孩子一样，而不是走一条早已注定的孤独之路。
He came by on Saturday to see if she was lonely. One thing led to another and he stayed the night.
他星期六过来看看她是不是感到孤独。自然而然地，他就留下来过夜了。