Bài tập thì hiện tại đơn

 are NOT Non-Continuous Verbs. 
IMPORTANT Specific Times with the Past Perfect
Unlike with the Present Perfect, it is possible to use specific time words or phrases with the Past Perfect. Although this is possible, it is usually not necessary.
Example:
·	She had visited her Japanese relatives once in 1993 before she moved in with them in 1996. 
MOREOVER
If the Past Perfect action did occur at a specific time, the Simple Past can be used instead of the Past Perfect when "before" or "after" is used in the sentence. The words "before" and "after" actually tell you what happens first, so the Past Perfect is optional. For this reason, both sentences below are correct.
Examples:
·	She had visited her Japanese relatives once in 1993 before she moved in with them in 1996. 
·	She visited her Japanese relatives once in 1993 before she moved in with them in 1996. 
HOWEVER
If the Past Perfect is not referring to an action at a specific time, Past Perfect is not optional. Compare the examples below. Here Past Perfect is referring to a lack of experience rather than an action at a specific time. For this reason, Simple Past cannot be used. 
Examples:
·	She never saw a bear before she moved to Alaska. Not Correct 
·	She had never seen a bear before she moved to Alaska. Correct 
ADVERB PLACEMENT
The examples below show the placement for grammar adverbs such as: always, only, never, ever, still, just, etc.
Examples:
·	You had previously studied English before you moved to New York. 
·	Had you previously studied English before you moved to New York? 
ACTIVE / PASSIVE 
Examples:
·	George had repaired many cars before he received his mechanic's license. Active 
·	Many cars had been repaired by George before he received his mechanic's license. Passive 
TRUNG TÂM ANH NGỮ QUỐC TẾ ÚC CHÂU
Thì Quá Khứ Hoàn Thành
FORM 
[had + past participle]
Examples:
·	You had studied English before you moved to New York. 
·	Had you studied English before you moved to New York? 
·	You had not studied English before you moved to New York. 
USE 1 Completed Action Before Something in the Past
The Past Perfect expresses the idea that something occurred before another action in the past. It can also show that something happened before a specific time in the past.
Examples:
·	I had never seen such a beautiful beach before I went to Kauai. 
·	I did not have any money because I had lost my wallet. 
·	Tony knew Istanbul so well because he had visited the city several times. 
·	Had Susan ever studied Thai before she moved to Thailand? 
·	She only understood the movie because she had read the book. 
·	Kristine had never been to an opera before last night. 
·	We were not able to get a hotel room because we had not booked in advance. 
·	A: Had you ever visited the U.S. before your trip in 2006?B: Yes, I had been to the U.S. once before. 
USE 2 Duration Before Something in the Past (Non-Continuous Verbs)
With Non-Continuous Verbs and some non-continuous uses of Mixed Verbs, we use the Past Perfect to show that something started in the past and continued up until another action in the past.
Examples:
·	We had had that car for ten years before it broke down. 
·	By the time Alex finished his studies, he had been in London for over eight years. 
·	They felt bad about selling the house because they had owned it for more than forty years. 
Although the above use of Past Perfect is normally limited to Non-Continuous Verbs and non-continuous uses of Mixed Verbs, the words "live," "work," "teach," and "study" are sometimes used in this way even though they are NOT Non-Continuous Verbs. 
IMPORTANT Specific Times with the Past Perfect
Unlike with the Present Perfect, it is possible to use specific time words or phrases with the Past Perfect. Although this is possible, it is usually not necessary.
Example:
·	She had visited her Japanese relatives once in 1993 before she moved in with them in 1996. 
MOREOVER
If the Past Perfect action did occur at a specific time, the Simple Past can be used instead of the Past Perfect when "before" or "after" is used in the sentence. The words "before" and "after" actually tell you what happens first, so the Past Perfect is optional. For this reason, both sentences below are correct.
Examples:
·	She had visited her Japanese relatives once in 1993 before she moved in with them in 1996. 
·	She visited her Japanese relatives once in 1993 before she moved in with them in 1996. 
HOWEVER
If the Past Perfect is not referring to an action at a specific time, Past Perfect is not optional. Compare the examples below. Here Past Perfect is referring to a lack of experience rather than an action at a specific time. For this reason, Simple Past cannot be used. 
Examples:
·	She never saw a bear before she moved to Alaska. Not Correct 
·	She had never seen a bear before she moved to Alaska. Correct 
ADVERB PLACEMENT
The examples below show the placement for grammar adverbs such as: always, only, never, ever, still, just, etc.
Examples:
·	You had previously studied English before you moved to New York. 
·	Had you previously studied English before you moved to New York? 
ACTIVE / PASSIVE 
Examples:
·	George had repaired many cars before he received his mechanic's license. Active 
·	Many cars had been repaired by George before he received his mechanic's license. Passive 
TRUNG TÂM ANH NGỮ QUỐC TẾ ÚC CHÂU
Thì Tương Lai Hoàn Thành
Future Perfect has two different forms: "will have done" and "be going to have done." Unlike Simple Future forms, Future Perfect forms are usually interchangeable.
FORM Future Perfect with "Will" 
[will have + past participle]
Examples:
·	You will have perfected your English by the time you come back from the U.S. 
·	Will you have perfected your English by the time you come back from the U.S.? 
·	You will not have perfected your English by the time you come back from the U.S. 
FORM Future Perfect with "Be Going To"
[am/is/are + going to have + past participle]
Examples:
·	You are going to have perfected your English by the time you come back from the U.S. 
·	Are you going to have perfected your English by the time you come back from the U.S.? 
·	You are not going to have perfected your English by the time you come back from the U.S. 
NOTE: It is possible to use either "will" or "be going to" to create the Future Perfect with little or no difference in meaning.
USE 1 Completed Action Before Something in the Future 
The Future Perfect expresses the idea that something will occur before another action in the future. It can also show that something will happen before a specific time in the future.
Examples:
·	By next November, I will have received my promotion. 
·	By the time he gets home, she is going to have cleaned the entire house. 
·	I am not going to have finished this test by 3 o'clock. 
·	Will she have learned enough Chinese to communicate before she moves to Beijing? 
·	Sam is probably going to have completed the proposal by the time he leaves this afternoon. 
·	By the time I finish this course, I will have taken ten tests. 
·	How many countries are you going to have visited by the time you turn 50? 
Notice in the examples above that the reference points (marked in italics) are in Simple Present rather than Simple Future. This is because the interruptions are in time clauses, and you cannot use future tenses in time clauses.
USE 2 Duration Before Something in the Future (Non-Continuous Verbs) 
With Non-Continuous Verbs and some non-continuous uses of Mixed Verbs, we use the Future Perfect to show that something will continue up until another action in the future.
Examples:
·	I will have been in London for six months by the time I leave. 
·	By Monday, Susan is going to have had my book for a week. 
Although the above use of Future Perfect is normally limited to Non-Continuous Verbs and non-continuous uses of Mixed Verbs, the words "live," "work," "teach," and "study" are sometimes used in this way even though they are NOT Non-Continuous Verbs.
REMEMBER No Future in Time Clauses
Like all future forms, the Future Perfect cannot be used in clauses beginning with time expressions such as: when, while, before, after, by the time, as soon as, if, unless, etc. Instead of Future Perfect, Present Perfect is used. 
Examples:
·	I am going to see a movie when I will have finished my homework. Not Correct 
·	I am going to see a movie when I have finished my homework. Correct 
ADVERB PLACEMENT
The examples below show the placement for grammar adverbs such as: always, only, never, ever, still, just, etc.
Examples:
·	You will only have learned a few words. 
·	Will you only have learned a few words? 
·	You are only going to have learned a few words. 
·	Are you only going to have learned a few words? 
ACTIVE / PASSIVE
Examples:
·	They will have completed the project before the deadline. Active 
·	The project will have been completed before the deadline. Passive 
·	They are going to have completed the project before the deadline. Active 
·	The project is going to have been completed before the deadline. Passive 
Lunch at school - Bữa trưa ở trường
Lunch at school
"Dad, I don't want to go to school today." said the boy. 
"Why not, son?" 
"Well, one of the chicken on the school farm died last week and we had chicken soup for lunch the next day. Then three days ago one of the pigs died and we had roast pork the next day." 
"But why don't you want to go today?" 
"Because our English teacher died yesterday!"  
Bữa trưa ở trường
Con trai nói với bố " Bố ơi, hôm nay con không muốn đi học đâu."
" Sao lại thế, con?"
" Tuần trước, một con gà ở trại của trường bị chết và trưa ngày hôm sau chúng con ăn súp gà trong bữa trưa. Rồi cách đây 3 ngày một con lợn bị chết và trưa ngày hôm sau chúng con ăn thịt lợn quay. "
" Thế nhưng tại sao hôm nay con không muốn đi học ? "
" Vì.. thầy giáo dạy tiếng Anh của con mới chết hôm qua. "