ルール
Use the correct past participle after "have/has/had" (e.g. "has written", not "has wrote"). Use the present perfect for actions continuing to now and the past perfect for an earlier past action.
have/has/hadの後には正しい過去分詞を使う（has wroteではなくhas written）。今まで続く動作は現在完了、さらに前の過去は過去完了を使う。
✔ 正しい文： By 2010, the species had disappeared from the island.
✘ 誤った文： By 2010, the species had disappear from the island.
→ 直し方： Use the past participle "disappeared" after "had".
コツ: "Have/has/had" + past participle: began → has begun, wrote → has written, chose → had chosen.
練習：10問
Which choice completes the text so that it conforms to the conventions of Standard English?
AUSLEXが作成したオリジナルの解説と問題で、College Boardの公式資料ではありません。SATはCollege Boardの商標です。