Listen to a story/news item etc, and write what you hear. Stories are organised by level. There is something weird about how it deals with punctuation, so do have a go first yourself.
The Writing Machine is an Internet resource created at the English Centre, at the University of Hong Kong. It is designed to help students understand and master the process of writing academic essays.
The advice files listed here by category answer the kinds of questions that University of Toronto students ask about their written assignments. Most were created by writing instructors here-people who are familiar with U of T expectations. But you will also find links to good advice from other institutions under Further Resources.
This index links to pages that analyze the errors in authentic pieces of writing by ESL students at various levels of English language proficiency. There are also links to two programs that enable users to run their own language analysis.
JustTheWord is a completely new kind of aid to help you with writing English and choosing just the word. If English is your first language, JustTheWord can help you express that elusive idea with le mot juste.
This site is designed to help students with their writing.
When searching for words, Netspeak can give you directions. Their dictionary contains billions of phrases and how commonly they are used.