②打卡练习-were to
练习说明：
听例句先完整复述（无需录音），后面听关键词造句
例句1
audio16895190134853416-W17D1打卡练习1.mp3
关键词1
audio16895190134862425-W17D1打卡练习1-1.mp3
关键词2
audio1689519013486643-W17D1打卡练习1-2.mp3
例句2
audio16895190295451228-W17D1打卡练习2.mp3
关键词1
audio16895190295453988-W17D1打卡练习2-1.mp3
关键词2
audio1689519029545780-W17D1打卡练习2-2.mp3
例句3
audio16895190461381748-W17D1打卡练习3.mp3
关键词1
audio16895190461381884-W17D1打卡练习3-1.mp3
关键词2
audio16895190461382013-W17D1打卡练习3-2.mp3