English Pronunciation expert Adrian Underhill divides pronunciation skills into three levels…
Level 1: Individual Sounds (the individual sounds in English like /r/ or /l/)
Level 2: Words (including stress)
Level 3: Connected Speech (rhythm, sentence stress)
In order to do level 3 well, you need to have strong fundamentals in level 1 and level 2.
For more information, you can watch this video…