Guided sentence building : use the suggested words and the forms of the Past Simple and Past Perfect to write complete sentences.

1.When/we/come/stadium/match/already/begin//.

2.After/they go/I/sit down/rest//.

3.Last night/I/take a bath/before/go/bed//.

4.They/not feel/safe/until/find a shelter/last night//.

5.I/phone/police/as soon as/see/burglas.//

6.He/ask/me/wherher/I/see/his pen/table/I tell/him that/I not seeit/around.//

7.By/end/last March/I/study/English/five years.//

Give the right forms of the verbs in backets : Past tenses ( QKHT,QKD,QDTD)

1. Yesterday , John (go) ________ to the store before he (go) ______ home

2. She (win) _________ the gold medal in 1986

3. Our teacher (tell) ________ us yesterday that he (visit) _______ England in 1970.

4.When John and I got to the theater,the movie (start)..............already.

5.Before Alice (go)...........................to sleep,she(call).................her family

6.Daisy (agree)................with other members in the last meeting.

7.What ..................you (do)..................................at 6p.m yesterday?

8.When the phone (ring).............................,I (have)..............................dinner.

9.He(teach)........................................in this school before he (leave)...............for English.

10.The litter girl asked what (happen)...........to her ice-cream.

Give the right forms of the verbs in backets :Past Simple or Past perfect.

1.They(go).........home after they(finish).........their work.

2.She said that she (already,see).....................Dr.Rice.

3.When we came to the stadium,the match (already,begin)..............................

4.They told me they (not,eat)...............................such kind of food before

5.He (ask)..........................why we (come)...........................so early

6.After they had gone,I (sit).......................down and (rest)..............................

7.Before she (watch)........................Tv,she (do)...............her homework.

8.After taking a bath,he (go)................................to bed

9.How(be)................he when he (be)......................young?

10.It was the first time I (ever,see).....................................such a beautiful girl.

Guided sentence building : use the suggested words and the forms of the Past Simple and Past Perfect to write complete sentences.

1.When/we/come/stadium/match/already/begin//.

2.After/they go/I/sit down/rest//.

3.Last night/I/take a bath/before/go/bed//.

4.They/not feel/safe/until/find a shelter/last night//.

5.I/phone/police/as soon as/see/burglas.//

6.He/ask/me/wherher/I/see/his pen/table/I tell/him that/I not seeit/around.//

7.By/end/last March/I/study/English/five years.//

Combine these pairs of sentences using When or After and the verbs in the past perfect and Past simple.

1.Everbody had a chance to say what they thought.Then we took a vote.

2.I posted the letter.Then I felt much better about everything.

3.She stoped trying to lose weight.She looked much healthier.

4.He bought presents for everyone in his family.Then he bought something for his girlfriend.

write the verbs in backets in the Past simple or the Past perfect.

1.I(just,clean)..............the carpet,the dog(come).........in and (shake)...............himself.

2.When she (arrive).......................at the class,Mike(sweep).................the class for her already.

3.Nobody(come)............to the meeting because the secretary(forget)......................to tell the staff about it.

4.Because he(not,check)..................the oil for so long,the car (break).............down.

5.She couldn't find the book that I (lend)..............her.

6.They(never,find)..................where he(hide)...........................the money.

7.When she (come)......................in,we all knew where she(be)..............................

8.The lesson(already,start)......................when I (arrive)....................

Bài 5: Tìm giá trị lớn nhất của biểu thức:

\(A=\sqrt{-9x^2+6x+3}\)

B=\(\sqrt{3-2x^2}\)

\(C=5+\sqrt{-4x_{ }^2-4x}\)

Bài 4: Chứng minh rằng:

√2 + √6 + √12 + √20 + √30 + √42 < 24

Bài 2: Rút gọn các biểu thức sau:

\(6-2x-\sqrt{9-6x+x^2}\) (với x<3)

\(\frac{3-\sqrt{x}}{x-9}\) (với x≥ 0;x≠9)

\(\frac{x-5\sqrt{x}+6}{\sqrt{x}-3}\) (với x≥ 0;x≠9)

Bài 1: Tìm x để các căn thức bậc hai sau có nghĩa

\(\sqrt{\frac{2}{9-x}}\); \(\sqrt{x^2+2x+1}\);\(\sqrt{9-x^2}\)

\(\sqrt{\frac{1}{x^2-4}}\); \(\frac{1}{\sqrt{x}+2}+\frac{\sqrt{x}}{\sqrt{x}-3}\)