perhaps - 後面要加動詞ing嗎

Perhaps he's running with Tom.

這裏沒有任何語法錯誤，是正確的.

不用run，用running，be動詞後面一般加動詞的ing形式.

perhaps的解釋

ad. 也許，可能

perhaps的例句：

Perhaps I am wrong， but I think she is near forty.

也許我錯了，但是我想她快四十歲了。

Such a mistake would perhaps lead to disastrous consequences.

這樣一種錯誤可能導致災難性的後果