He heard the alarm go off.

　　他聽(tīng)見(jiàn)警報(bào)響了。

　　The alarm did go off but all I did was yawn, turn over and go back to sleep.

　　鬧鐘確實(shí)響了，但我只是打了個(gè)哈欠，翻個(gè)身又接著睡著了。

　　Boys at that age should be able to explore and go off on their own, go on bike rides, get into mischief

　　那個(gè)年齡的男孩應(yīng)該可以自己出去闖，也可以騎車(chē)出游，還可以調(diào)皮搗蛋。

　　He had never been afraid of failure: he was a gambler, ready to go off somewhere else and start all over again.

　　他從來(lái)都不害怕失敗：他是個(gè)冒險(xiǎn)家，隨時(shí)準(zhǔn)備到別處從頭再來(lái)。

　　He pulled the trigger but the gun didn't go off.

　　他打了一槍?zhuān)瑳](méi)有發(fā)火。