How should teachers respond to their students' errors in English?

How? By correcting those errors and making students repat the correct variant from start to finish without any mistakes

Different students have their different attitude and we should have diferent technique and aproaches in correcting them.But we should always correct our students. We owe that to them. They have the right to know if what they are saying is correct." I believe that by correcting them in an ESL course, we will help them to avoid embarrassment and even humiliation later on. So it is well worth

Find the best way to correct.Be patience.Of course, you have to find a way to correct your students so they are not bothered by your intervention. Ideally, they should repeat your corrections immediately, as they go along, thus improving their speaking skills. Better still they should also have some trace of their mistakes to avoid them in the future.

Students can be put off at the beginning when their teacher picks up all their mistakes—especially if the latter are numerous. I also caution teachers against correcting students speaking in front of the whole class—at least in the beginning. This can unnerve them and they will undoubtedly not be able to say the sentence correctly even when corrected. On the other hand, pair work or group work can be the ideal time to walk around the room and discreetly rectify any mistakes the students are making.

Informing students with the correct methods

To avoid encountering opposition or creating embarrassment, I explain to the students at the beginning of a course that I work like a machine, i.e., I react immediately to a mistake and correct it orally. They should realize that I am simply doing my job, and I am in no way judging them as a person or condemning their ideas. I am merely helping them to reformulate in English that is correct what they are trying to say. I also tell them that if I say nothing, it means their English is correct, and this is gratifying to them. Once they understand the purpose and the method I use, they welcome corrections.

Correcting one on one sessions

I do a lot of tutorials, one-to-one sessions, where students give presentations on a topic of their choice. Students really enjoy these sessions alone with the teacher (during lab) since there is no peer pressure and they are free to choose the topics that really interest them. Some students will at first respond to my correcting by saying "sorry" and then continuing. I stop them and say, "You don’t need to say ‘sorry’. Just reformulate the phrase correctly to show me you have understood the correction." Usually, they will make the same mistake once or twice again, but then suddenly the third time they will say the expression correctly… with a big smile!

Leaving a written trace

When I have tutorials, I not only correct orally what the student is saying, but I also write down the “incorrect phrasing” followed by the acceptable phrasing or pronunciation, as the case may be. At the end of the tutorial, I hand the corrections to the student, who will add the corrections at the bottom of his/her typed outline before submitting the finalized work to the Web Disk or printing it out to place it in their private portfolio. Some students have really amazed me by designing beautiful tables with all the mistakes underlined and the correct formulations highlighted. Others have even added personal advice that I gave them such as “I shouldn’t keep turning my pencil with my fingers, even if I feel nervous.”

well ,it is really surprising to correct mistakes in oral or written course to students with a tough manner,surely theywill  dislike the course  ;the teacher should not dispise a student who  makes many errors especially in front of his collegues this is not good,always there is a way and the means justifies the end,so, the teacher in that case could correct the mistake by talking to the studet silently when others are doing the next activity or could write the answer in the board then keep students take notes or telling them that the killing mistakes in english are really unforgivable so that you put the stress on the importance of writing or speaking correctly otherwise the resut will  be unbearbale to  the student himself before the teacher.  thus,be lenient with students to love the english language and ensure among them  a kind of awareness to make them in the right field.

thanks for the invitation

I agree with the esteemed professors Answers

I think the teacher needs just to repeat the wrong sentence that the student said, in the correct way and let the student has another attempt, if he repeats the error then the teacher needs to explain that point to the whole class so the student will get it without being embarrassed.

First of all, teacher mustn't punish his student if he has a problem in any  language skill. He has to tell his student that it is ordinary thing.Also he should correct them for example ; if a student says ( He play piano), the teacher has to say ( you mean that he plays piano) and explain it and give him some exercises to answer it.

Apologized for the answer, I do not know, leave the answer for the professionals.