join;attend(参加)的区别

join join sb/sth 参加了某一团体

join the army 参军

join the party 入党

join us (口语)加入我们中来

take part in 参加某一种活动

take part in the race 参加比赛

take part in a play

take part in the party

attend 出席

attend meeting 参加会议，出席会议

attend the party 出席宴会

attend class 上课

☆this time 这一次

☆in(介词)+颜色、衣服：穿着……衣服

用介词短语取代动词，避免了一句话中出现两个动词

The boy in green.

☆ever=at any time:任何时候(时间副词)

☆grow up (人)成长

grown up (形容词短语)成年人

★Key structures

☆must 的用法

must+原形

1. = have to 不得不，必须

must ; have to 的区别

have to 可以有任意时态

must 只有两种时态：现在时，将来时;在过去时的句子中，要用have to来表示“必须”

have to 可以被have got to取代

have to 作为实义动词，否定式为 don't have to;will not have to;didn't have to

2.(对现在的)推测

对现在的推测 must do

对过去的推测 must have done

★Special difficulties新概念2composition

☆as

1.介词 “作为” As a young girl...

2.代词 “正如” As I learned,...

3.连词 =because “由于” As I am busy...

4.连词 =when “当……时” As I was leaving the house,...

5.方式状语从句的引导词 Do as you are told. 叫你怎么做你就怎么做。

6.“作为……工作” I work as ...

☆dress,suit,costume

dress:裙子，晚礼服，连衣裙(女式)

suit：套装(男式)

costume：演出服，民族服装，某一年代所穿的服装

☆fancy-dress party 化装舞会