1.it's not good to play tricks on the old.请问这句能这样表达吗：it's no

很高兴为你解答。保证正确率~!【答案】：1、 可以的,play tricks on sb = play a trick on sb 戏弄某人。2、After school he goes home 【 by 】【himself】。     解析：alone = on one's own = by oneself 独自3、I  was doing my homework when my mother 【 went / got / reached】【 home】。4、I 【 told】mum the good news 【as】【soon】【as】she 【came 】back 。    解析：as soon as 一。就 ,等于 the moment / minute / second。 祝开心~! 再问： 。i (will tell )mum the good news (as )(soon )(as )she ( come)back 。如果前面多一格的话，这样表达行吗？将来时态。主将从现 再答： I (will tell )mum the good news (as )(soon )(as )she ( comes)back 。 注意： come 要加s，mother是三人称单数。 但是表达的意思是： 妈妈一回来，我就会告诉她这个好消息。 都是没发生的事情。