Page 219 - Makino,Tsutusi.DictionaryOfIntermediateJGrammar

koto ni yoru 145
em

S koto ni yoru is usually preceded by a topic phrase or clause. S represents
the cause of the result represented by the topic phrase or clause.

Expression]
Tafne da or kara da are also used to present a cause. Thus, KS(B), for exam-
ple, can be paraphrased as [I].

It should be noted that "X wa S tame da" and "X wa S kara da" can be used
for "X wa S koto ni yoru" only when X is a clause. When X is a noun phrase,
tame da and kara da are unnatural, as in [2].

Compare [2] with 131, where X is a clause.

(It was because we didn't have enough discussion beforehand that
we failed this time.)
It should also be noted that koto ni yoru represents only a cause. Kara da, on
the other hand, represents a reason as well as a cause and tame da represents
a reason, a purpose, or a cause, as in [4] and [5].
L.1 a
PI 4&7F1\"-Y1. -b=&j~hjS197:oli#~jS19f: (f=&fZ/ j,'%f:/*,
2 C : k 5 I. [Reason]
(The reason that he didn't come to the party was that he was busy.)

151 %&jsz1+~1. --.$&oc$$k& {f~@f:/*15>5f:
6 1, [Purpose]
(It is to see Haruko that he is coming to the party.)
(e kara3 (DBJG: 179-81); tame (ni) (DBJG: 447-51))