infinitive [ɪnˈfɪnɪtɪv]

例句:

• Modal verbs generally take the bare infinitive.
  情态动词通常用不带to的不定式.
  
• The use of the split infinitive is now generally acceptable.
  分裂不定式的用法现在已被广泛接受.
  
• In English an infinitive is often used with the word " to ".
  英语中,不定式往往与 " to " 字连用.
  
• Stupidity of people are infinitive -Money now!!!
  来自SA
• In no circumstances is a mere split infinitive ungrammatical.
  来自THETIMES
• The following verb is in the infinitive form.
  来自BBC