An English lesson which focuses on the topic of ergative verbs. Ergative verbs are ambitransitive (they can be used with or without an object) and the object of the transitive verb can be used as the subject of the intransitive verb.
start / stop
begin / finish
increase / decrease
More lessons can be found on my websitehttps://www.skype-lessons.com/
And more exercises on this topic can be found at this excellent websitehttp://random-idea-english.blogspot.co.uk/2011/08/ergative-verbs-what-on-earth-are-they.html