太极拳

我学太极拳亚洲艺术组。 (我在亚洲艺术祖学太极拳。In chinese, we say subject first, then verb, then object. Adverbial doesn't go after object. We use adverbial before verb.)
我是初学者。（我的）老师是 Marta。（The full stop is not good, if you use comma here, then you can make a long sentence. Like'我的老师是Marta, 她教得很好。）Marta 是很好。 
昨天（，）陈正雷市府教太极拳课我们的学校。 （陈正雷市政府来到我们学校教太极拳 adverbial goes before verb.）课是不容易(课不是很容易）但是（我们)( don't forget subject.)很开心！今天我是很累。我是也高兴。(今天我很累。我也很高兴。）you don't have to use 是 in al sentences. If you would like to use 是， make sure you use noun after 是 。for example,我是老师。teacher is a noun.