A herd of
一群
?? 詞語組成解析
herd
[h?d]
n. 獸群;牧群;放牧人;<蔑>群眾，民眾;
vt.& vi. 群集，糾結;
vt. 放牧;（使）向…移動;使成群;
of
[?v]
prep. 關于;屬于…的;由…制成;
aux. 助動詞 [非標準用語、方言] =have [主用于虛擬語氣];
??? 情景例句
Everybody help yourselves.
大家請便吧。
Jean's mother warned her that men would try to take advantage of her.
瓊的母親警告她，男人會占她的便宜。
Mary is still writing letters. She's been writing letters all day.
馬力還在寫信，她寫了一整天的信。