University of Calgary
University of Calgary: Sentence Elements: Noun & Verb Phrases
This section of an online grammar guide provides definitions and examples of noun and verb phrases and how they are used in sentences.
Other
Bowdoin Coll.: Spanish Grammar: Verbs Followed by Prepositions Before Infinitive
Many verbs need a preposition before an infinitive. This site provides a substantial list of verbs which require a pronoun before an infinitive and the meaning of the phrase it creates.
Khan Academy
Khan Academy: Auxiliary (Helping) Verbs
Is the underlined verb the main verb in the sentence, or is it helping the main verb?
College Claparede (Switzerland)
English Exercises Online: Use of the Gerund
Practice creating the gerund form of words by typing them into boxes within a set of ten sentences. Hints are available if needed, and answers can be checked when the exercise is finished.