Page 338 - Makino,Tsutusi.DictionaryOfIntermediateJGrammar

264 ni naru to
hriLL II<
(d) %b3, 3Zb:a& 2, T@WC~#%$C=&;~T~~T < ;kk0
(When I was a child, in summer, my parents took me to the ocean.)
(el ;kqw1i3~i, %J+G=Q&~, L<B?+~L~:~
fbW< *v
(When I was a college student, I traveled a lot during vacations.)
+h
(f) qEii7y b;f;'-~ba;f$b:~&tr#$j?,
(When the topic of the conversation is football, he is totally absorbed
in it.) Llt + h t
-
Le4ri trtll
(g) 4kEiiBDZtG:ts&k, APZ~J~~:L~C=W<~~&~
(The president becomes lenient as if he were a different person, when
it comes to the matter of his daughter.)
xp *
(h) rczaa 2, ZDZ&L tjiij&c:a~,~
(When it becomes snow, this airport is often closed.)

1. Regardless of whether the noun before ni naru to is a time noun or not,
the N ni naru to as a whole is used to express the time when an uncon-
trollable state occurs as in KS(A), (B) and Exs.(a) - (c), (f) - (h) or a
habitual action occurs as in Exs.(d) and (e).
(+ to4 (DBJG: 480-82))
2. The phrase in question is a subjectless construction because the sen-
tence simply does not have a subject. When the noun I noun phrase that
precedes ni nam to is a non-time expression, ni naru to is used either as
a subjectless construction as in KS(B) and Exs.(f) - (h), or as a non-sub-
jectless construction as shown in (1) and (2) below in which joyU
'actress' and ham 'spring' are not time nouns. Note that the subject of
naru is watashi for (1) and kisetsu for (2).
(1) B&ZC:~~ 2, mmi%i~'&da$ ~;k-a*tv,
(If I become an actress, my parents might not like itJ
* t7 It&
(2) +287FFC=a& 2~&&kk:; RseCGiTtvT < &.
(When the season becomes spring human heart becomes sponta-
neously bouncy.)