任务 1 / 10
PRESENT PERFECT vs PAST SIMPLE
混合否定。 'Didn’t’ 对比 'Haven’t / Hasn’t’。
I (not / do) 购物 yesterday. 混合否定。 'Didn’t’ 对比 'Haven’t / Hasn’t’。
任务 2 / 10
I (not / do) the shopping yet.
任务 3 / 10
He (not / call) me since Tuesday.
任务 4 / 10
He (not / call) me on Tuesday.
任务 5 / 10
We (never / be) to 中国.
任务 6 / 10
We (not / go) to 中国 in 2018.
任务 7 / 10
She (not / finish) the book. She’s on chapter 2.
任务 8 / 10
She (not / finish) the book yesterday evening.
任务 9 / 10
They (not / eat) anything today.
任务 10 / 10
They (not / eat) anything at the party last night.