---
title: "Diphthongs and complex vowels"
description: "Read and spell words containing diphthongs and complex vowel patterns (ow, ou, ew, ue, ie, aw, au) and words ending in -y as a vowel sound"
canonical: https://lightmysky.com/learn/english/diphthongs-and-complex-vowels-mt_fMd7v87IiI
source: https://lightmysky.com/learn/english/diphthongs-and-complex-vowels-mt_fMd7v87IiI.md
retrieved: 2026-10-19
---

> **Agent view.** This is the Markdown twin of the page, for tools and assistants.
> When to use this site, and the call that answers each job: https://lightmysky.com/agent-instructions.md
> API description (OpenAPI 3.1): https://lightmysky.com/openapi.json · Authentication: https://lightmysky.com/auth.md
> Pricing: https://lightmysky.com/pricing.md · Catalog: https://lightmysky.com/llms.txt · Full catalog: https://lightmysky.com/llms-full.txt
> Every machine-readable file on this domain: https://lightmysky.com/.well-known/ai-catalog.json
> Ask for Markdown with `Accept: text/markdown`, a `.md` address, or `?mode=agent`.

# Diphthongs and complex vowels

Read and spell words containing diphthongs and complex vowel patterns (ow, ou, ew, ue, ie, aw, au) and words ending in -y as a vowel sound

Subject: English · Area: Phonics & Word Reading · Ages 5 to 6
Page: https://lightmysky.com/learn/english/diphthongs-and-complex-vowels-mt_fMd7v87IiI

## Ready when they can

- Read words with variable vowel sounds (e.g. 'ow' in 'cow' vs 'snow')
- Decode words with diphthongs (e.g. 'cloud', 'blue', 'pie')
- Read words ending in -y pronounced as /ee/ or /igh/ (e.g. 'happy', 'my')

## Lesson: Diphthongs: two vowels, one new sound

Some letter teams team up to make one new sound. Ow, ou, ew, ue, ie, aw, and au often do this.

*(drawing: Say each pair of letters as one gliding sound.)*

**Example.** Ben reads the word 'cloud'. He blends the letters and hears one gliding /ow/ sound.

Watch out: ow can say two sounds. It says /ow/ in 'cow' but long o in 'snow'.

At the end of a word, y can be a vowel. It sounds like /ee/ in 'happy' or /igh/ in 'my'.

**Recap.** Diphthongs blend two letters into one sound, and a final y can say /ee/ or /igh/.

## Practice

24 questions on this page, each with its working shown.

## Needs first

- [Blending Sounds to Read Words](https://lightmysky.com/learn/english/blending-sounds-to-read-words-mt__KHQttMde3)
- [Vowel Digraphs](https://lightmysky.com/learn/english/vowel-digraphs-mt_BtMbZibZUj)

## Opens up

- [Alternative Spellings for Known Sounds](https://lightmysky.com/learn/english/alternative-spellings-for-known-sounds-mt_OgJPbGkrYk)