TAKOBOTO

When I think it may
When I think that it may continue this way I really get depressed.

Add formation 

これからこのじょうたいがつづくのかとおもうとおちこんでしまう。

When I think that this state may continue from now on I get really depressed.

いま、じぶんがおやにやってもらっていることをやらないといけないかとおもうとぞっとします。

When I think that now I may have to do those things my parents did for me it gives me the shivers.

イギリスじんかとおもったらアメリカじんだって

Just when I was thinking he was English, he said he was American

クリスがどんなにむかつくかとおもうと、あたまがいたくなりそう。

I fear I'm getting a headache thinking about how annoying Chris is.

When you think [___] you get [certain feeling].

Amatuka

I don't think that this usage is limited to かと思うと. と思うと probably has plenty of examples.

Amatuka

often this is used when a second, contradicting thought follows.

dc

I don't think that last example is the same usage.
What the others have in common are
1. Continuing, every time type occurrence (e.g. When [every time] I think X ...)
2. The result is feeling / emotion related.

The third example is a) Past tense, once off.
b) The second half of the sentence /isn't/ the result of the first.
c) Isn't かおもうと but かおもったら

Amatuka

Kono joutai ha kono mama da to tsudzuku ka to omou to ochikonde shimau.
When i think this situation might continue on like this i get really depressed.
What do you guys think about how this sounds?
(roomaji de Gomen ne ^^')

Exrulez

I think it doesn't need that "da to" in there hehe

Exrulez

When 'dato' is used, J would be この状態が（このまま）続くのだと思うと、落ち込んでしまう。
ちなみに、type tuduku で つづく、続く

Miki