后面要加动词ing吗 perhaps

Perhaps he's running with Tom.

这里没有任何语法错误，是正确的.

不用run，用running，be动词后面一般加动词的ing形式.

perhaps的解释

ad. 也许，可能

perhaps的例句：

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

也许我错了，但是我想她快四十岁了。

Such a mistake would perhaps lead to disastrous consequences.

这样一种错误可能导致灾难性的后果