に[先駆「さきが」]けて => The earliest, very first in A; Ahead of A, in advance of A N1
Time, Situation
[使「し」][役「えき」][受「う」]け[身「み」] => Imperative N4
Causative, Passive, Volitional
を[契機「けいき」] => As a good opportunity A, (do) B N2
Information, Report
きらいがある => There is a tendency to do A N1
Potential, Possibility
きりがない => There's no end to A, there's no bounds to A N1
Adjectival, Descriptions
わけがない => There's no reason for A (A should not be possible) N3
Potential, Possibility
[事「こと」]ができる => Be able to A; can do A, Can A; be possible to A; N4
Causative, Passive, Volitional
へ => Go to N, head to N , Often followed by verbs like 行く/いく, 来る/くる, 向かう/むかう… N5
Particles
をきっかけに => With A as a good opportunity/chance to B, Using A as a time to (start) B N2
Information, Report
きり => Only A N3
Degree. Level, Amount
うが~うが => Whether A or B N1
Miscellaneous
[極「きわ」]み/[極「きわ」]まりない => Extremely A N1
Degree/ Level/Amount