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Rule "missing 'to' after 'able'"

This is one of many errors that LanguageTool can detect.

Description: missing 'to' after 'able'
Message: The preposition 'to' is required before the verb '\4'.
Category: Grammar (ID: GRAMMAR)
Incorrect sentences
that this rule can detect:
  • I'm able go forward.
    Correction suggestion: able to go
  • Tom is not able make this happening.
    Correction suggestion: able to make
Correct sentences
for comparison:
  • They are unable even to exercise faith in Christ by their own will.
  • A little man who was stumping along eastward at a good walk, and the other a girl of maybe eight or ten who was running as hard as she was able down a cross street.
ID: ABLE_VBP [1]
Version: 6.8-SNAPSHOT (2025-10-29 22:33:07 +0100)