Exercise for Verb Tenses(This exercise retrieved from SELF Worksheet1 for Verb Tenses ELEMENTARY LEVEL part1)
Fill in each blank with the correct form of the verb given in brackets.
Of all human parts, only brains have never been successfully replaced. Artificial or natural replacements can carry out the work of all the other parts of the human body. False teeth and artificial limbs have long been used. For many years now, people who have lost a lot of blood in an accident or an operation (1)have received(receive) transfusions of blood from blood banks. These blood banks are built up with the help of donors, people who (2)give(give) their blood for those who need it. Skin damaged by burns can also be replaced by healthy skin from other parts of the body in an operation called a skin craft.
The heart is the body's most vital organ. If it (3) stops (stop) working, death soon follows. But many people in our time have bad hearts and suffer from heart disease. Christiaan Barnard, a South African surgeon, gave these people new hope when he (4) performed (perform) the first human heart transplant, after at least twenty trials on dogs, in 1967. He took the heart of a donor shortly after he (5) had died (die) in a car accident and used it to replace a sick man’s heart. Since then, many successful transplants (6) have been carried out (be carried out) and there are people who (7) have lived (live) with transplanted hearts for seven years and more. Kidneys and livers have also been transplanted, though the success rate in liver transplants (8) is(be) still very low.
Answer:
(1) have received, (2) give, (3) stops, (4) performed, (5) had died, (6) have been carried out, (7) have lived, (8) is
7 comments:
i have the same problem.. and i still cannot fix it..i think it is kind of complicated....still working on it >.<
hahah, I found that I have the same problem. And it is seems that most of us have the same problem. Honestly speaking, I think the usage of tenses is difficult. I have been suffering it for a long time, and I am still struggling with it. Whatever,your work is very helpful. And I learnt a lot from it.
cheers^^
When I started to learn English, I remembered our teacher spent the whold semester to teach tense. I think Chinese students may have a solid understanding about tense. Although it is not difficult, we need to be very very careful in order to avoid every single tense mistake.
It seems that many of us tends to make tenses mistake. I do make alot of tenses mistake as well. According to some of my previous teachers advice, we just have to be more careful and not make the same mistake twice. Practice writing and reading more books do helps alot =)
haha... I just found out that we both wrote on the same grammar mistake and chose the almost identical examples. Maybe this is the most common weakness in Malaysian. :P
Anyhow, I tend to make the same mistake over and over again even though i keep reminding myself not to write in such a way. Maybe my brain cant process grammar and flow of ideas simultaneously(lame excuse~). Anyhow, i will try to write more and let my peers check on my works. Anyone interested in helping me?? :P
Zheng
I also wrote on this grammar mistake. How to avoid verb tenses mistakes? When I am writing I can check and analyze my sentence; however, when I am speaking, I am making verb tenses mistakes at the same time. I just cannot delete them in the air, and re-speak again..
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