tā / gāng / cái / hái / shuō / bù / cān / jiā / hòu / lái / yòu / gǎi / kǒu / shuō / yuàn / yì / qù / le

他刚才还说不参加，后来又改口说愿意去了。

He had just said he would not attend, but later changed his mind and said he would go.