CCSS.ELA-Literacy.L.4.1 Demonstrate command of the conventions of standard English grammar and usage when writing or speaking.

• CCSS.ELA-Literacy.L.4.1a
  Use relative pronouns (who, whose, whom, which, that) and relative adverbs (where, when, why).
• CCSS.ELA-Literacy.L.4.1b
  Form and use the progressive (e.g., I was walking; I am walking; I will be walking) verb tenses.
• CCSS.ELA-Literacy.L.4.1c
  Use modal auxiliaries (e.g., can, may, must) to convey various conditions.
• CCSS.ELA-Literacy.L.4.1d
  Order adjectives within sentences according to conventional patterns (e.g., a small red bag rather than a red small bag).
• CCSS.ELA-Literacy.L.4.1e
  Form and use prepositional phrases.
• CCSS.ELA-Literacy.L.4.1f
  Produce complete sentences, recognizing and correcting inappropriate fragments and run-ons.
• CCSS.ELA-Literacy.L.4.1g
  Correctly use frequently confused words (e.g., to, too, two; there, their).