English as a Second Language/question

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Question
Are these sentences correct?
1.How long does your class take last?

2.How many hours does your class last?It lasts for two hours.

3.It take long 2 hours.

4.How much does your class take long?

5.He runs 50 km every 3 hours.

6.I can swim under 9 km per hour.

7.How long can you swim per hour?

8.I would play a lot of chess when I was younger.

10.students aged 16 can participate in the meeting.

11.students around age of 16 can participate in the exam.

12.I am in Level" Advanced ".

13.I am strong in/at grammar.

14.what president of the USA is Mr X? He is the third.


Are there any differences between these two sentenses?
I have only 1 year experience in teching.
I only have 1 year experience in teaching.


What is the difference between these two sentences?
It is getting cold,I should get back home now.
It is getting cold,I must get back home.

Answer
Are these sentences correct?
1.How long does your class take last? >>> incorrect I'm guessing you mean: How long does your class last?

2.How many hours does your class last?It lasts for two hours. >>> correct

3.It take long 2 hours. >>> incorrect I assume you mean: It takes two hours.

4.How much does your class take long? >>> incorrect Again, I assume: How long does your class last?

5.He runs 50 km every 3 hours. >>> correct (but running 50 km every 3 hours sounds strange, not to mention impossible)

6.I can swim under 9 km per hour. >>> incorrect I assume you mean: I can swim less than 9 km in an hour.

7.How long can you swim per hour? >>> incorrect I assume: How much can you swim in an hour?

8.I would play a lot of chess when I was younger. >>> incorrect I assume: I used to play a lot of chess when I was younger. Or I played a lot of chess when I was younger.

10.students aged 16 can participate in the meeting. >>> incorrect I assume: Students who are 16 years old can participate in the meeting

11.students around age of 16 can participate in the exam. >>> incorrect Again, I assume: Students arround the age of 16 can participate in the exam (even though this sounds pretty odd to me)

12.I am in Level" Advanced ". >>> incorrect I assume: I have reached the "Advanced" level

13.I am strong in/at grammar. >>> incorrect I assume: My grammar skills are strong

14.what president of the USA is Mr X? He is the third. >>> incorrect I guess you meant: Which one of the USA presidents was Mr. X (we actually say President X not Mr. X)? He was the third.


Are there any differences between these two sentenses?
I have only 1 year experience in teching.
I only have 1 year experience in teaching.

no differences but I'd say: I only have one year of teaching experience.


What is the difference between these two sentences?
It is getting cold,I should get back home now.
It is getting cold,I must get back home.

"I should" means it's advisable to, but not mandatory; "I must" means it's mandatory to get back home.

Nilo,
for the future, p,ease provide me with some context for your sentences. It's not easy for me to guess what you're trying to say when correcting your sentences. Also, I'm not sure if you want me to fix the mistakes or just give you my opinion about the sentences (correct vs incorrect). Please clarify this for me.

Looking forward to more of your interesting questions.

Best,

Amy  

English as a Second Language

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Amy Baker

Expertise

I can answer question about grammar, spelling, syntax, idioms, reading and/or writing that pertain to English as a Second Language. I am knowledgeable about both TOEFL and IELTS.

Experience

I'm a certified ESL teacher with 12 years of experience teaching K-12 and adults.

Education/Credentials
BSc MEd TESL post grad program for k-12 TESL post grad program for adult ed

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