かれ~かれ => A or B N1
Lists, examples
[恐「おそ」]れがある => There is a chance of A N2
Potential, Possibility
[中心「ちゅうしん」]に => With A as the center N2
Miscellaneous
てくれる => Do for someone. N4
Give and take advice
と([思「おも」]う、[言「い」]う、[考「かんが」]える) => That A N4
Particles
がっている => Want, like N4
Secondary Verb
がっている => Wants to A N3
Will, Decision, Doing
てくれてありがとう => Thank you for doing A N4
Honorifics
がちです/がちになる => A tends to become/happen/occur N2
Potential, Possibility
それが => Although (you'd expect) A, (actually) B, Even though A was planned, B N2
Contrast,Surprise
とされる => It is said/believed/thought that A N1
Information, Report
たことがある => Have done A before N4
Situations and Experiences