Collocation of words related to 1.sign
Common phrases related to sign, including sign for up, mean "register, participate, participate". For example, I have signed a contract with this company.
The second phrase is sign contract, which means "sign a contract, sign terms", sign convention means "sign agreement" and "sign agreement", that is, mathematical symbols can be expressed by symbol conversion, and the last commonly used symbol means "sign for".
2. Sign as root extension
When sign is used as the root word, the extended word is signal, which is obvious as an adjective, and as a noun and verb, it means "signal, number" or "the fuse of something". It also has translations of nouns, such as please sign your name with fire in this dangerous place, which means please fire flares with fireworks in this dangerous place.
At the same time, signed, on the one hand, can be used as the past tense and past participle of sign, on the other hand, as an adjective, it is "signing and agreeing", which can mean affirmation and negation. When the words sign and age are combined, sign stands for sign and sign sign. No matter how the word form changes, as the root of other words, the translation of sign mainly focuses on the extension and expansion of signals and symbols, which can reduce the memory burden of word meanings for students.