You use neither in front of the first of two or more words or expressions when you are linking two or more things which are not true or do not happen. The other thing is introduced by 'nor'.
Professor Hisamatsu spoke neither English nor German.
久松教授既不讲英语,也不讲德语。
If you say that one person or thing does not do something and neither does another, what you say is true of all the people or things that you are mentioning.
nor
I never learned to swim and neither did they.
我从没学过游泳,他们也没学过。
You use neither after a negative statement to emphasize that you are introducing another negative statement.
I can't ever recall Dad hugging me. Neither did I sit on his knee.
我记不得爸爸拥抱过我,我也没有在他膝盖上坐过。
You use neither to refer to each of two things or people, when you are making a negative statement that includes both of them.
At first, neither man could speak.
开始两个人都不会说。
You use neither to refer to each of two things or people, when you are making a negative statement that includes both of them.
They both smiled; neither seemed likely to be aware of my absence for long.
他们两个人都笑了,看来都没意识到我离开了很长时间。
You use neither of us, neither of you, or neither of them to refer to each of two things or people, when you are making a negative statement that includes both of them.
Neither of us felt like going out.
我们两个都不愿意出去。