In English, when describing the process of 'using our eyes to obtain information', we must choose one of several different verbs. The most common choices are: look / see / watch.
I often hear students use the incorrect verb, so I thought the issue deserves some attention. I spent some time researching the internet, and found a very nice explanation by a woman named Karen Adams.
Let's look at what she said…
Look', 'see' and 'watch' seem very similar, they all talk about different ways of using your eyes. However, there are two very important differences. It depends on how you intend to look or watch and how intense the looking is. When we say 'see' we are normally talking about things we can't avoid – so for example, "I opened the curtains and saw some birds outside." - I didn't intend to see them, it just happened. However, when we use the verb 'look', we're talking about seeing something with an intention. So, "this morning I looked at the newspaper" – I intended to see the newspaper.
When we watch something, we intend to look at it but we're also looking at it quite intensely, usually because it's moving. So, for example, "I watched the bus go through the traffic lights." "I watched the movie." We want to see it, we're looking at it intensely and it's normally moving.
When we use verbs of the senses, and this group, 'look', 'see' and 'watch' are verbs of visual sense, there's usually a difference between intention and non-intention, so, for example, "I heard the radio." - I didn't intend to, it just happened, or, "I listened to the radio" - I switched it on to find my favourite programme. Similarly, "I felt the wind on my face." - I didn't intend to feel this, it just happened, or "I touched the fabric." - I intended to feel the fabric.
It's important when you find these verbs of the senses to gather them together and try to find the differences between them. Remember that when you look at words which seem to be similar it's important to find out exactly the differences between them because basically you can't really use them interchangeably.
Remember, 'see' – you didn't really intend to, it just happened; 'look' – you intended to do it; and watch you intended to do it and you were looking intensely, usually because it was moving.
I think the above guide is very useful. I would also add that we often add a preposition after the word 'look' to point the 'looker' in the direction we want want them to look.
For example:
look at
look for
look up
look down
look forward
look back
look in
look out
look upon
etc.
When making movies or television shows it is very important to watch the entire movie very carefully to check for errors, or mistakes before presenting it to the worldwide audience.
Sometimes the movie production staff does not watch carefully enough. For example in the 1997 movie "Titanic", there are 195 mistakes listed on a single internet page.
The following is a specific mistake you might be able to notice:
In the scene where Jack comes to the 'first class' door for the first time (in his tux) you can see a cameraman in the glass door before he enters.
"If you look closely you can see it, but you must watch carefully."
