When you speak boastfully, you talk about yourself as if you are better than other people, and you make sure they hear it. You might speak boastfully about marks, money, looks, or how clever you are.

When you speak boastfully當你boastfully說話時 you talk about yourself as if you are better than other people講自己講得好像比別人厲害 and you make sure they hear it而且還故意讓別人聽到 You might speak boastfully about marks, money, looks, or how clever you are可能是boastfully地講成績、錢、外表、或自己多聰明

It is an adverb, so it tells us HOW someone talks or acts, not what kind of person they are: he smiled boastfully; she answered boastfully. It is not a kind word — if someone says you spoke boastfully, they think you went too far and made other people uncomfortable.

It is an adverb這是個副詞 so it tells us HOW someone talks or acts所以講的是某人「怎麼」說話或做事 not what kind of person they are:不是在講他是什麼樣的人 he smiled boastfully; she answered boastfully像he smiled boastfully（他得意地笑）、she answered boastfully（她自誇地回答） It is not a kind word這不是個好聽的字 if someone says you spoke boastfully如果有人說你spoke boastfully they think you went too far and made other people uncomfortable他們是覺得你講過頭了，讓別人不舒服

Though actually, in everyday talk we more often use the verb: He's boasting again. Boastfully turns up more in writing, stories, and when a teacher is naming the behaviour.

Though actually, in everyday talk we more often use the verb:不過其實日常講話更常直接用動詞 He's boasting again.「He's boasting again.」（他又在吹牛了） Boastfully turns up more in writing, storiesBoastfully比較常出現在書面文章、故事裡 and when a teacher is naming the behaviour或是老師在點名這種行為的時候