ĐÁP ÁN VÀ GIẢI THÍCH

SIMPLE PAST

S + V2/ed +…

S + did not + V (nguyên mẫu)

Did + S + V (nguyên thể)?

PAST PROGRESSIVE

S + was/were + V_ing

S + was/were + not + V_ing

Was / Were + S + V_ing +...? 

PAST PERFECT TENSE

S + had + V3/-ed

S + had not / hadn’t + V3/-ed

(Wh-) + had + S + V3/-ed…?

ĐỀ BÀI + BÀI LÀM

1. I ( order) a drink while , I( waiting) for Brad in arrive

    I ordered a drink while , I was waiting for Brad in arrive

2. I ( be )  sorry that I ( not be )  nicer to him

    I am sorry that I hadn't been nicer to him

3. She coundnnot find the book that I ( lend) her last month 

    She coundnnot find the book that I lent her last month 

4 .It was a singer that I ( never hear)  of

    It was a singer that I had never heard of

5. Laser ( discover)  by Gordon Gould in 1958 

    Laser was discovered by Gordon Gould in 1958

KO CHÉP MẠNG = TỰ LÀM 100%

NHỚ CHO MÌNH 5* , CẢM ƠN VÀ CÂU TRẢ LỜI HAY NHẤT NHA 

CHÚC BẠN HỌC TỐT 

1. ordered( qkd )-was waiting (qktd )

2. was-wasn't be (qkd)

3. had lent (qkht)

4. had never heard (qkht)

5. was discovered (qkd bị động )