https://www.khanacademy.org/ela/9th-and-10th-grade-grammar/xf006c25352e869bb:style-and-tone-9/xf006c25352e869bb:expanding-combining-and-reducing-sentences-9/a/varying-sentence-structure-grammar-9 2026-07-13T19:41:05.916442654Z Varying sentence structure Learn how varying your sentence structures can engage readers and better convey meaning. article https://www.khanacademy.org/ela/9th-and-10th-grade-grammar/xf006c25352e869bb:style-and-tone-9/xf006c25352e869bb:expanding-combining-and-reducing-sentences-9/a/expanding-sentences-with-modifying-phrases-descriptions-and-details-9 2026-07-14T15:00:54.021605571Z Expanding sentences with modifying phrases, descriptions, and details Practice expanding sentences with modifying phrases, descriptions, and details. article https://www.khanacademy.org/ela/9th-and-10th-grade-grammar/xf006c25352e869bb:style-and-tone-9/xf006c25352e869bb:expanding-combining-and-reducing-sentences-9/a/combining-sentences-grammar-9 2026-07-14T18:30:40.92487512Z Combining sentences Learn how to link ideas and vary sentence structure by combining sentences. article https://www.khanacademy.org/ela/9th-and-10th-grade-grammar/xf006c25352e869bb:style-and-tone-9/xf006c25352e869bb:expanding-combining-and-reducing-sentences-9/a/eliminating-wordiness-and-redundancy-9 2026-07-14T15:00:54.021605571Z Eliminating wordiness and redundancy Learn how to make your sentences clearer and more concise. article https://www.khanacademy.org/ela/9th-and-10th-grade-grammar/xf006c25352e869bb:style-and-tone-9/xf006c25352e869bb:expanding-combining-and-reducing-sentences-9/e/expanding-combining-and-reducing-sentences-grammar-9 2026-07-13T19:41:05.916442654Z Expanding, combining, and reducing sentences Practice revising passages to add relevant details, increase clarity, and reduce wordiness. David Rheinstrom exercise