"由sb来+v+o“ means sb. take the responsibility to do sth. eg. 我想由我来修这台电脑。 老板希望由我来和客户谈判。 80后，90后，00后， indicate the people born after 1980, 1990,2000, "们"indicate plural,like 我们，你们，他们，here emphasize the whole generation.

男团 eg. 1direction 男团

慢慢赶回家， the grammar is good, but it's not logical. It does not make any sense.

This is a usage of spoken language. not a mistake. eg. 我去吃饭去了。我去睡觉去了。 我去工作了。is the standard one.

候选的人员 = Candidate It's better to say 候选人

纯素主义者 （vegan）(no milk/egg/any animal products) 素食主义者（vegetarian）

S.+是+X+V.+的 X:a word or a phrase indicating time/place/manner. This structure emphasizes when/where/how an action or behavior took place in the past. 你是什么时候去的？ Nǐ shì shénme shíhou qù de? 我是昨天去的。 Wǒ shì zuótiān qù de. 你是在哪儿出生的？ Nǐ shì zài nǎr chūshēng de? 我是在中国出生的。 Wǒ shì zài zhōngguó chūshēng de. 你是怎么写的？ Nǐ shì zěnme xiě de? 我是用电脑写的。 Wǒ shì yòng diànnǎo xiě de.

Hi 1, When a 3rd tone is immediately followed by another 3rd tone, the former is pronounced as the 2nd tone. Example: nǐ hǎo → ní hǎo nǐ hǎo měihǎo wǔ bǎi běihǎi gěi nǐ yǔfǎ kěyǐ fǔdǎo 2, Modulation of “不”— bù bù before 4rd tone, change to 2nd tone 不去 bù qù --- bú qù 不会bù huì --- bú huì 不累bù lèi --- bú lèi 3, Modulation of “一”— yī "yī" before 4rd tone, change to 2nd tone 一切yī qiè --- yí qiè 一件yī jiàn--- yí jiàn 一共yī gòng--- yí gòng "yī" before 1rd tone, 2nd tone , 3nd tone , change to 4nd tone 一杯yībēi---yì bēi 一天yītiān--- yìtiān 一直yīzhí---yìzhí 一条yītiáo---yìtiáo 一碗yī wǎn---yì wǎn 一起yīqǐ---yìqǐ