title: How can I add new POS tag in spacy for English
body: <p>For POS tagging, I am using spacy. I found pos tags for gerund and infinitives are not given. How can I add these two new tags in spacy? I can change tags within the list but not able to add new tags. Please help. Thank you.</p>
  <pre><code>**pattern = [tokens[t].pos_== &quot;VERB&quot; and tokens[t-1].pos_==&quot;ADP&quot; for t in range 
  (len(tokens)-1)]
   spacy.pipeline.tagger.Tagger.add_label(u&quot;GERUND&quot;)**
  </code></pre>
  <p>this gives error:</p>
  <pre><code> TypeError: add_label() takes exactly 2 positional arguments (1 given)
  </code></pre>