Pronunciation guide: IPA symbols, stress and word endings

θ	thin	ð	this	ʃ	she	ʒ	measure
tʃ	church	dʒ	judge	ŋ	sing	j	yes

p b t d k g f v s z h m n l r w sound as in ordinary English spelling.

ˈ main stress, before the stressed syllable: /ˈwɔːtə/ water · ˌ lighter (secondary) stress: /ˌʌndəˈstænd/ understand
ː a long vowel · (r) an r said only in accents that pronounce it (most American, Scottish, Irish)

-s / -es (plurals; he/she form of verbs): /s/ after voiceless sounds (cats), /z/ after voiced (dogs), /ɪz/ after s, z, sh, ch, j sounds (buses, watches). Spelling: -es after s, x, z, ch, sh; consonant + y → -ies (city → cities).
-ed (past): /t/ after voiceless sounds (walked), /d/ after voiced (played), /ɪd/ after t or d (wanted). Spelling: love → loved, stop → stopped, carry → carried.
-ing: make → making, run → running, see → seeing.
Irregular: go, went, gone · be, was, been · see, saw, seen · man → men · child → children · mouse → mice.
Older (King James) forms: -eth = -s (he loveth = he loves) · -est with “thou” (thou lovest) · spake = spoke.

keep on

verb

Forms keeps on keeping on kept on

verb (transitive, idiomatic) To persist or continue. “Keep on trucking!”
verb (intransitive, idiomatic) To persist in talking about a subject, perhaps to the annoyance of the listener. “For goodness sake, will you stop keeping on about it!”
verb (transitive, idiomatic) To cause or allow to remain in an existing position. “The new boss would like to keep the present secretary on.”
verb (transitive, idiomatic) To cause or allow to remain in the on or open position. “Should I turn off this light or keep it on?”

Synonyms

Sources: Wiktionary · WordNet 3.0 — from the Wiktionary entry “keep on”, CC BY-SA 4.0. Details