GoodEnglishONEWalrus激onsin1.So...that+从句如此...以至于+表语（adj.adv.）eg:Guilinissobeautifulthatwealllikeit.2.joinin参加，加入（某些活动）Join激n与takepartin的区别：joinin+活动join+团体（改变身份）takepartin+活动3.Be(not)goodat(doing)...（不）擅长做某事begoodat+vingBeterribleat(doing)...不擅长做某事dowellin+vingeg:Tomisnotgoodatswimmingbutheisgoodatrunning.4.befilledwith被动语态：be+pp.Beful...
