Cấu trúc thì quá khứ đơn với động từ thường ( dạng phủ định ) 

` ( - ) ` : S + didn't + V nguyên mẫu 

Cấu trúc thì quá khứ đơn với tobe ( dạng phủ định ) 

` ( - ) ` : S + wasn't / weren't + ...

` + ` I / he / she / it / chủ ngữ số ít + wasn't + ...

` + ` You / we / they / chủ ngữ số nhiều + weren't + ...

Dấu hiệu thường gặp : Last night , last month , yesterday , in the past , in 2009 , ...

` 1 ` . It didn't rain yesterday 

` 2 ` . We didn't run to the tree house 

` 3 ` . She wasn't late this morning 

` 4 ` . My brother didn't make a lot of noise 

` 5 ` . They weren't at home last night

S + didn't + V nguyên mẫu 

S + wasn't/weren't + ..

1. it didn't rain yesterday

2. We didn't run to the tree house

3. she wasn't late this morning any/a lot of noise

4. my brother didn't make

5. they weren't at home last night