look
单词辨析：
侧重由视觉得出某种印象，后接 as if 引导的表语从句时常可与 seem 换用。
He looks pale.
他看上去脸色苍白。
He looks like a doctor.
他看上去像个大夫。
He looked/seemed as if he hadn't slept for a week.
他看上去好像一星期没有睡觉了。
尤指从所知或所见得到某种印象，常后接动词不定式或 that 引导的表语从句，常可与 seem 换用。
He appears/seems unhappy.
他看起来不高兴。
Police said that there appeared/seemed to be signs of a break-in.
警方称似乎有破门而入的迹象。
It appears/seems that he killed the man.
似乎是他杀了这个男人。
侧重指由主观看法得出判断，但暗示有一定的依据。
It seems like it's going to rain.
天好像要下雨。
Our coach seems like an energetic person.
我们教练似乎是一个精力充沛的人。
The kids seem unaffected emotionally by their parents' divorce.
孩子们在情绪上似乎并未受到父母离婚的影响。
最普通用词，指人或事物的外表，较口语化，用于复数时可指美貌。
The area has a very dirty look to it.
这个地区看上去肮脏不堪。
He has a tired look in his eyes.
他的眼中露出倦意。
Her looks are beyond comparison.
她的美貌无与伦比。
普通用词，指相对内在而言，某人或某物给人的印象。
There was a noticeable transformation in his appearance.
他的容貌有了明显的变化。
We should not judge a person by his appearance.
我们不应以貌取人。
It spoiled the appearance of the whole building.
它破坏了整幢建筑的外观。
侧重指人或事物在某一时间呈现的样子。
Her aspect was frightening.
她当时的样子很可怕。
The fierce aspect of the salesman frightened the customer off.
那个店员的一脸凶相把顾客吓走了。
The lightning gave the room a scary aspect.
闪电使屋里显得非常可怕。
侧重短暂的看的动作，但并不一定能看见，有时用来唤起别人的注意。
Look at the blackboard.
看黑板。
Look at my new car.
瞧瞧我的新车。
She covered her eyes, afraid to look.
她蒙上眼睛，不敢看。
指注意到某事物，或为了解某人、某事而对其进行仔细观察。
The far side of the moon is difficult for us to observe.
我们难以观察到月亮的另一面。
Thousands of people observed the ship leaving the harbour.
数以千计的人观看了轮船离港下水的情形。
The scientist carefully observed the specimen.
这名科学家仔细观察标本。
指发现或意识到某事；也指以某种方式理解某人或某事。
I perceived a change in his behaviour.
我发觉他的行为有些变化。
I can't perceive any difference between these pictures.
我看不出这些图片有什么差别。
She is perceived as the future president.
她被视为未来的总裁。
侧重看的结果；也指眼睛看得见或观看比赛、电视节目等。
He looked but saw nothing.
他看了看，但什么也没有看见。
You can see for miles from here.
从这儿可以看到好几英里远。
Did you see that programme last night?
你昨晚看那个节目了吗？
指在一段时间内关注某人或某事。
watch television
看电视
Next time you visit the zoo, watch the tigers carefully.
下次你们参观动物园，要仔细观察老虎。
Can you recommend a place where we can watch the beautiful sunrise?
你能推荐一个我们可以观看美丽日出的地方吗？
相关例句：
The castle looks over private parkland
城堡俯瞰一片私家绿地。
Look what a mess you've made of your life.
看看你把自己的生活都弄成什么样子啦。
She looked at him earnestly. 'You don't mind?'
她认真地看着他说：“你不介意吗？”
She had the look of someone deserted and betrayed
她一副遭人遗弃和背叛的样子。
Now, look, here is how things stand.
现在听好啦，情况眼下是这样的。
You've just got to look at the last bit of Act Three.
你只要看一下第3幕最后那部分。