Student or Learner
As well as grammar - English Usage
If the main clause has an infinitive clause, an infinitive without ''to'' is possible in the clause introduced by ''as well as''.
-I have to cook breakfast as well as get the kids ready for school.
But, I have seen the sentence following in ''wikipedia'. My question is Must I use 'to' after 'as well as'? Which one is better, with 'to' or without?
-Language acquisition is the process by which humans acquire the capacity to perceive and comprehend language, as well as to produce and use words and sentences to communicate.
The 'to' is grammatically optional, but will normally be included if there is any possibility of its absence causing structural ambiguity. If you read the Wikipedia example carefully, it should be clear why the writer has elected to include it!