1.原句.
forget to eat breakfast：我忘记要吃早餐.
主语：I
谓语：forget
宾语：to eat breakfast
2.forget to do sth.：忘记要做某事.
forget doing sth.：忘记做过某事.
同remember..
另：forget,try,stop,go on,continue,stop,regret,cease,mean后面均可用不定式和-ing形式,但意义截然不同.
3.to do与to doing.
(1)to作介词(prep.),后接名词(n.)代词(pron.)动名词(v.ing)作宾语.
(2)to作不定式符号,后跟动词(v.)原形构成带to的不定式.
4.复合宾语与双宾语.
(1)复合宾语：宾语＋宾补.
句子结构：主语(S)+及物动词(vt.)+宾语(O)+宾补.
宾语为made,keep,have等时,后接宾补.
宾补成分to do,v.ing,ved,adj.,adv,n,prep.
e.g.We'll make our country more beautiful.我们将使我们的城市变得更美好.
I put the book up sit down.我把书放的乱七八糟.
We all call him Jack.我们都叫他杰克.
(2)双宾语：间接与直接宾语同时出现的情况.
句子结构：主语+谓语+间接宾语(人sb.)+直接宾语（物sth.）.
谓语动词give,offer,bring,lend,take,send,fetch,pass,show,tell等,后接双宾语.
e.g.I give him some money.我给了他一些钱.
