Look before you leap. 是一句习语,表示“三思而后行”.需要特别记忆.
就这四个词来说,watch强调长时间地注视或观看.例如:watch TV(看电视),watch a football game(看足球比赛)
see强调“看见,见到”.
e.g. She looked for him but couldn't see him in the crowd.
她在人群里找来找去,但没看见他.
look表示“看”,是个不及物动词.常见短语为:look at sth./sb.(看着某物/某人),look for sth./sb.(寻找某物/某人)
e.g. Look at the blackboard, please! 请看黑板.
I'm looking for my English book. 我在找我的英语书.
read的话一般表示“看书、看杂志、看报纸等文字性的东西”
e.g. He likes reading very much. 他非常喜欢看书.
read the newspaper 看报纸
还有什么不懂的地方,可以再问哈~