請教英文文法think可以用"進行式"嗎

think可以用進行式啊！！
題目裡的at present,是表示目前,現在的意思,一定要用正在進行式啊！！

可以用,thinking

ex. I am thinking about what should I buy for my teacher.

另, 你的課本上的其他verb, 除了seem,
其他都可用present continuous

think要分什麼時候用進行式，不是每次都可以用進行式喔~

When think means "believe" or "have an opinion", we do not use the continuous:
ex:
I think Mary is Canadian, but  I`m not sure. (not I`m thinking)

When think means "consider`, the continuous is possible"
ex:
I`m thinking about what happened. I often think about it.

think表信念或意見時不能用進行式，但表"consider"時可以用進行式，口語上比較常聽到，書寫語文很少，除非是小說~