Even with repetition, communication is severely limited even with people used to dealing with foreigners. Stress, intonation, tone, etc. are usually quite faulty. A native speaker must often use slowed speech, repetition, paraphrase, or a combination of these to be understood by this individual. This speaker has a functional, but limited proficiency. The individual is unable to produce continuous discourse except with rehearsed material.
Structural accuracy is likely to be random or severely limited.
Time concepts are vague. Vocabulary is inaccurate, and its range is very narrow. The individual often speaks with great difficulty. By repeating, such speakers can make themselves understood to native speakers who are in regular contact with foreigners, but there is little precision in the information conveyed. Almost every utterance may be characterized by structural errors and errors in basic grammatical relations.