English = SVO The Cat | will eat | the mouse

Japanese = SOV 猫 | は | ねずみ | を |たべます

this is however not entirely acurate as the following are also compleately valid

SOV: 　猫はねずみを食べます

OV: ねずみを食べます

V,O: 食べます、ねすみを

V:　食べます

example convo:

A.　今日は何をしますか？

B.　寝る

A.　え、それだけですか？

B.　うーん、食べる

A.　そして？

B.　見る！あの映画を！

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は is not the subject marker. が is the subject marker. は marks the main TOPIC of the sentence

example sentences:

今日は忙しい？

Busy today?

the topic is today

ご飯は？

how about some food?

the topic is food