フレーズ · 🎲 Speculating & hedging

Ele deve ter esquecido da reunião.

He must have forgotten about the meeting.

B2speculating about the pastくだけた音声・近日公開

それぞれの単語がその位置にある理由

Ele代名詞he, him3人称単数deve1動詞must, shoulddever · 現在 · 3人称単数ter1動詞to have不定詞esquecido動詞forgottenesquecer · 過去分詞 · 男性 · 単数da2前置詞of the, from thede + areunião名詞meeting女性 · 単数.

deve → ter: + infinitive
ter → esquecido: compound infinitive
esquecido → da: esquecer de

この形になる理由

注の番号は上の番号に対応しています。

1
Deduction about the past: deve ter + participle = must have. Compound future & conditional: speculation and allegation →
2
Speech says esquecer de; careful style: esquecer a reunião or esquecer-se da reunião. Verbs with prepositions (regência I) →