FLTRP's Dictionary of Modern English Usage, priced at 128 yuan, was recommended to us by my English teacher in high school, and it also contains vocabulary and grammar. But because of its huge size, it is not very convenient to use. So we usually use the most advanced Oxford, but Longman seldom uses it. As for the Chinese-English dictionary, don't laugh. Generally, electronic dictionaries are used, which is convenient and quick. I have never heard of anyone buying a paper Chinese-English dictionary.

The Commercial Press Dictionary of Common Words in Ancient Chinese, Shanghai Dictionary Publishing House Dictionary of Appreciation of Tang Poetry, Dictionary of Appreciation of Song Poetry, etc. Chinese will be used in senior high school, which can be considered, but it is usually available in school libraries. You'd better consult your high school teacher first, so as not to use it too few times and waste money. Of course, these words can still be kept after graduating from high school.

Xinhua dictionary, Xinhua dictionary (or modern Chinese dictionary) and idiom dictionary are all necessary, not to mention.

A Dictionary of English Frequently Asked Questions is prefaced by Bo Bing and published by Xingjie Book Publishing Company, which is also helpful for English learning. You can think about it. But this book is absolutely unnecessary. Be sure to see if it is suitable for the college entrance examination in your area before buying it.

Actually, your teacher is bluffing. As the previous person said, there is really no need to be so nervous. It is enough to have a few necessary books at hand. For convenience, most of the time, electronic dictionaries are appropriate.