look for

look for
寻找
He turned on the torch to look for his keys.
他打开了手电筒，寻找钥匙。
As the tide receded we were able to look for shells.
潮水退去，我们就能寻找贝壳了。
He began to look for another position immediately.
他马上开始寻找另一个职位。
Jane craned her neck to look for her mother in the crowd.
简伸长脖子张望，在人群中找她的母亲。
He has come all the way from Leeds to look for a job.
他从利兹远道而来寻找工作。

详解：

search作动词指“寻找”，后面跟寻找的范围，而search for后面跟寻找的目标。
We are searching the house.
我们正在搜查这房子。
We are searching for the house.
我们将找寻这房子。
search for有“努力寻找”的意思。偶尔忘记把东西摆放在哪时，通常用look for，而不用search for。

look down upon（on）<-->look forward to