She looked happy.

Kanojo wa shiawase soudatta.: She looked happy.
kanojo : she
shiawase : happy, happiness
souda : look, it looks, they say
soudatta : looked, it looked, the said

Kanojo wa shiawase soudatta : shi, happy, looked : She looked happy.

Kanojo wa shiawase souda : She looks happy.

Sengetsu kanojo ni attatoki, kanojo wa fushiawase soudatta.:When I saw her last month, she looked unhappy.
sengetsu : last month
ni : to, with
au : see, meet
(awa-nai, ai-masu, au, au-toki,ae-ba,aou,atta)
atta-toki : When (I) saw/met
fushiawase : unhappy
Sengetsu kanojo ni attatoki : last month,her,with,saw when : When (I) saw/met her