Chapter 01. 한정사
a(n) / all / any / both / some / the

Chapter 02. 조동사
can / could / may / might / must / shall / should / will / would

Chapter 03. 접속사
after / and / because / before / but / either / however / if / meanwhile / neither / nor / once / or / since / though / unless / whether / while

Chapter 04. 전치사
about / above / across / against / along / among / around / as / at / behind / below / between / beyond / by / down / during / for / from / in / into / of / off / on / onto / over / than / through / throughout / to / toward / under / up / with / within / without

Chapter 05. 동사
appeal / apply / appreciate / ask / ascribe / attend / break / bring / call / carry / charge / close / come / command / commit / count / deal / develop / do / end / engage / feature / find / fire / get / go / hear / help / lack / learn / live / make / manage / mind / miss / note / object / observe / pass / place / plant / please / post / point / put / refer / reserve / screen / see / serve / set / settle / share / stand / strike / study / subject / take / turn / treat / work / wear

Chapter 06. 명사
account / art / amount / bar / base / bed / bill / box / business / case / cause / cell / character / check / concern / condition / credit / date / drill / effect / energy / executive / favor / force / grade / hand / home / issue / interest / level / lot / line / matter / net / operation / order / passage / patch / performance / pool / power / problem / provision / quality / race / rate / rest / sale / scale / sense / sign / system / sport / stress / term / trouble / vision / way

Chapter 07. 형용사
aggressive / another / anxious / available / bad / bold / bright / capital / common / casual / certain / classic / dead / direct / due / fair / fast / fine / flat / formal / foul / general / good / hard / hot / innocent / light / modest / no / odd / open / past / poor / present / public / right / short / smart / solid / sick / tough / thin / thick / true / ultimate / upset / wild / yes

Chapter 08. 부사
ahead / already / altogether / apart / away / back / barely / else / even / ever / further / hardly / just / never / not / often / only / otherwise / out / quite / rather / seldom / so / soon / still / then / too / usually / very / well / yet