同学,很高兴回答你的问题
正确答案：
当然可以了,如
Yesterday we went to the park.
Tomorrow I will go to Beijing.
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
不明白请继续追问,
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^地点状语能放在句首吗也可以的，不过要和后面的句子用逗号隔开，如

At school, we learn lots of knowledge every day.Under his long wet coat he was wearing a dark grey suit.那这句呢