1 promise vt. 保證，許諾。有三種結構：

　　1)promise to do sth. _____My mother promised to buy a piano for me.

　　2)promise sb. sth. _____ My aunt promised me a bike.

　　3)promise + that 從句_____ Tom promises that he can return on time.

　　promise n. 允諾， 諾言

　　Lily is a dishonest girl. She never keeps a promise.

　　2.when 與 while 的區別：

　　when 表示“當…時候”，既指時間點，又指一段時間，when 引導的時間狀語從句中的動詞可以是終止性的也可以是延續性的。When the teacher came in, the students were talking.

　　When she arrives, I’ll call you.

　　while 表示“當…時候”，僅指一段時間，從句中的動作必須是延續性的，一般強調主從句的動作同時發生， while 還可以作并列連詞，意為“ 而、卻”，表示對比關系。

　　Lisa was singing while her mother was playing piano.

　　Tom is strong while his younger brother is week.

　　3. practice vt. 練習， 后接名詞，代詞或v-ing 作賓語。

　　Your elder sister is practicing the guitar in the room.

　　常跟v-ing 作賓語的動詞有：

　　考慮建議盼原諒：consider, suggest/advise, look forward to, excuse, pardon.

　　承認推遲沒得想： admit, delay/put off, fancy.

　　避免錯過繼續練：avoid, miss, keep/keep on, practice.

　　否認完成能欣賞： deny, finish, enjoy, appreciate.

　　不禁介意與逃亡： can’t help , mind, escape.

　　不準冒險憑想象： forbid, risk, imagine.

　　4. everyday 與 every day 區別

　　everyday adj. 每天的 在句中作定語，位于名詞前。 This is our everyday homework.

　　every day 副詞短語， 在句中作狀語，位于句首或句末。 He reads books every day.