1. Lesson A
1.1. Positive and negative descriptions
1.1.1. **Positive:** unconventinal, uncreative, unimaginative, unsuccessful, insignificant, ineffective, inconvenient.
1.1.2. **Negative:** conventinal, creative, evenful, imaginative, successful, significant, effective, convenient.
1.2. So and such
1.2.1. So + adj
1.2.2. Such + a/an + adj + noun
2. Lesson D
2.1. Reading
2.1.1. **essential:** thiết yếu **state-of-the-art:** hiện đại nhất **senior citizens:** dân cư cao tuổi **shortage:** thiếu hụt **golden years:** tuổi nghỉ hưu
2.2. Writing
3. Lesson C
3.1. Verb and Noun
3.1.1. invented - invention introduced - introdution designed - design innovated - innovation proved - proof succeded - success created - creation developed - development improved - improvement
3.2. The passive
3.2.1. **Simple present:** active: S + V(1) + **O** passive: **O **-> S + be + V(3/ed)
3.2.2. **Simple past:** Active: S + V(2/ed) + **O** Passive: **O **-> S + was/were + V(3/ed)
3.2.3. **Present perfect:** active: S + has/have + V(3/ed) + **O** passive: **O **-> S + has/have been + V(3/ed)
4. Lesson B
4.1. Eliciting and idea
4.1.1. Do you have any ideas ? Got any suggestions ? Got any ideas ?
4.2. Suggesting a solution
4.2.1. One idea could be to + Verb Something we could try is to ... One solution might be to ...