It sounds like you lack basic vocabulary to form sentences. Try to enroll on a esol course if your first language is not English.
If that is not possible then there are numerous websites online which list essential English vocabulary. If you need example sites, please visit the first site for audio and vocabulary. The second site is useful for pictures and vocabulary, whichever you prefer.
Beginner Lessons | Learn basic words and sayings
Both sites are easy to follow and cover basic vocabulary topics. The second site also has some basic sentences which should help you to form basic sentences.