What does the article talk about? Hi everyone, I am really confused about the last sentence of this article. "What nomad does seem to show is that, if methane ..." Here's the link: https://www.economist.com/science-and-technology/2018/12/22/new-results-suggest-there-is-no-methane-on-mars What attitude is it? Does it support the optimists that there is methane on Mars? or does it support Nomad itself that holds the opposite view? As far as l understand, the optimists say Nomad could only probe upper parts of the atmosphere, so it means that they think methane is in the lower parts of the atmosphere. But nomad says methane is limited to low levels of the air and it makes me feel that nomad acknowledge it didn't probe the lower parts of the Mars' atmosphere, which contains some methane. This really confuses me since my reading ability isn't good enough. Thanks for any help.

Would have to have had? What does this mean? Hi everyone, I read a sentence from The Economist, which is "For either to be the explanation of the seasonality observed by Curiosity, the rover would have to have had the luck to land in an area of such methane seeps." Why isn't it " the rover would have to have", rather "the rover would have to have had? Do these have different meanings? And I've never seen infinitive+perfect tense before. l thought infinitives should be followed by regular verbs. Please help. Explanation in Mandarin would be great, but English could still work for me. Thank you.

Writing Practice. Please check. Thank you. Many parts of the world are losing important natural resources, such as forests, animals, or clean water. Choose one resource that is disappearing and explain why it needs to be saved. Used specific examples to support your opinion. As technology constantly advances, the environments are also changing significantly. Although some see the forest as a place for outdoor activities such as hiking and camping, forests have more functions than everyone expects. I will provide 3 reasons why forests need to be saved. To begin with, trees play a critical role in filtering the air. Nowadays, there are more and more factories emitting toxic chemical gas into the air, gradually causing air pollution. In my country, air pollution issue is a current focus of public debate. Because of limited trees to filter the air and excessive gases emit into the air, people in my country live in the environment that raises the risk of respiratory disease. Thus, losing forests will affect our lives greatly. Secondly, at least more than half the existing animals will die in the future, if forests, their habitats, are being reduced. For example, birds cannot live without trees, because they feed on caterpillars, which consume leaves. Therefore, it is obvious that creatures completely rely on forests, and once they are removed by people, we can expect that we will suffer from severe famine in the future. Last but not least, the greenhouse effect is now more familiar with people. Since people are developing technology, certain gases such as carbon dioxide and methane are releasing mostly by factories and transportations. These gases cannot penetrate the ozone layer, resulting in the famous phenomenon, global warming. To solve this problem, trees are pivotal in this circumstance. They reduce the gases through photosynthesis, bringing back a healthy season pattern to the earth. In conclusion, it is clear losing forests can have a significant impact on human. Of course, I understand that some might disagree with my position on this matter; however, I think the pieces of evidence provided above are strong enough to support my stance on this issue.

Feel pressure or feel pressured? Hi

I would like to know the difference between feel pressure and feel pressured. For example, I always feel pressured to speak in public.

Is it interchangeable for feel pressure? Please give me some sentence examples. Thanks a lot!

Feel pressure or feel pressured? Hi

I would like to know the difference between feel pressure and feel pressured. For example, I always feel pressured to speak in public.

Is it interchangeable for feel pressure? Please give me some sentence examples. Thanks a lot!

How do you use "be around" and "available"? Hi, everyone.

I am confused about the use of "be around".

Which one do native speaker say?

1. I am around Saturday.

2.I am around on Saturday.

Also, "I am available Saturday" or "I am available on Saturday" ?

Please help check the grammar. Any advice on my arguments would be appreciated as well. Thank you. “Corporations should look to the city of Helios when seeking new business opportunities or a new location. Even in the recent recession, Helios’s unemployment rate was lower than the regional average. It is the industrial center of the region, and historically it has provided more than its share of the region’s manufacturing jobs. In addition, Helios is attempting to expand its economic base by attracting companies that focus on research and development of innovative technologies.” Here's my analysis of the article:   At first glance, the argument of the article seems somewhat convincing, but a close examination will reveal how groundless it actually is. The author of this article claims that corporations should choose Helios as an ideal location to develop their business. In support of this recommendation, the author points out that Helios’s unemployment rate was lower than the regional average while in the recent recession. Furthermore, Helios is attempting to expand its economic base by attracting companies that focus on research and development of innovative technologies. However, I do not agree with this view, because it suffers from 3 critical flaws. First, the author uses unemployment rate to determine whether a place is congenial for companies. This method appears to be problematic. To elaborate, if a place has a very low unemployment rate, then new companies must have difficulties finding their prospective employees and thus lack of sufficient manpower. In aggregate terms, the author is wrong by using the opposite data to gauge whether or not a place is suitable for companies. Secondly, depending on the past data to make a decision about future career seems to be somewhat careless. The reason is that it is unpredictable when it comes to the future, and it is hard to prognosticate what future economic environment is, what future trend is or even what people think of later on. Therefore, the author cannot only rely on the past performance of Helios to claim that Helios is the most appropriate location for companies. Last but not least, even if those author’s assumptions found to be true, the author fails to consider the characteristic of corporations. At the end of the article, the author mentions that Helios wish to attract corporations that focus on new technology, so Helios doesn’t welcome all kinds of industries. ...(omit)

Is it weird to say these sentences? I am a lazy person and hate the sense of fast heart beating. Therefore, I usually do as little exercise as possible.

What are the qualities of a good co-worker? Co-workers are the people who work with us every day. Good colleagues make your work easier, but on the other hand, bad colleagues can make your work harder. Every people have different opinions about qualities of being a good co-worker. In my view, there are 3 qualities that a good colleague must have. First of all, a good colleague should be disinterested and willing to help people. It is very common that we get into trouble at work or need someone to give advice to us while having an unknown condition. At this moment, supports from our colleagues will be important and indispensable. Supposing that an executive assigns a few jobs to you that cannot be done by only one person and need you to finish before the deadline. However, your colleagues are so selfish that they only care about their own tasks, avoiding all possible works that require further help. As a result, without anyone’s help, not only cannot you hand in the works on time, but also the executive would suspect your work ability. Secondly, well work ability will be one of the qualities of being a good colleague. We sometimes have co-workers who entered the company for over a year but frequently need other people's help or constantly forget how to operate the system of the company rightly. This kind of colleagues is characterized by their poor memory, slow acting, and laziness. When there is such kind of people in your company, you always need to pay further attention to their task in case that the task won’t go wrong. Therefore, colleagues who can get their jobs done independently will be relatively helpful for you. Last but not least, no crafty colleague at work is fortunate. In the office work-life drama, the stories always show how employee wrest admiration from executives by setting up each other. Working with crafty colleagues will make you feel stressful because you might be afraid of accidentally offending them and suffering revenge at work. In conclusion, it’s clear that every quality I mentioned is needed for a good co-worker. Even though some may disagree with my points of view, I think the pieces of evidence provided above are strong enough to support my position.