If unsure about ie or ei, when the sound of your vowel is as In short /i:/, we spell it ie; but following the letter c, we spell it ei: … By way of example, "apple" gets "apples"; "tree" turns to "trees"; "book" improvements to "publications"; "portray" will become "paintings"; https://dsl-learning29765.blog-kids.com/28295793/facts-about-dsl-english-live-revealed