3. candidates at Band 7 are generally fluent and coherent when expressing ideas while those at Band 5 may have to make noticable efforts to keep their speech going, They have fluency problems esp. in more complex communication. 

   candidates at Band 7 have comparatively larger vocabulary necessary to cover a variety of topics, are able to paraphrase effectively, but thoase at Band 5 have limited vocabulary and fle*bility. 

 Band-7 candidates are able to employ complex structures with fle*bility while Band-5 candicates can only make use of basic structures with reasonable accuracy.

4. When preparing students, make sure they can use basic structures fle*bly first, before moving on to the higher level. provide them with different word or expressions for describing the same thing. And give them more reading (reading aloud) activities.

It's better to show students different articles around the same topic to equip them with a variety of expressions 

in order to get a better score, students should avoid silence. they should Learn some expressions they can use when they struggle to come with ideas.

Examples include: That’s an interesting question; Let me think; What I want to say is…

this will help them improve their fluency.

  About Fluency and Coherence: 

Band Five: not very fluent; slow speed; repetition; self correction; not very coherent or cohesive

Band Seven: naturally fluent; some repetition; some self correction; coherent and cohesive

About Le*cal Resource: 

Band Five: use vocabulary with limited fle*bility; not good at using paraphrase

Band Seven: use vocabulary fle*bly; uses paraphrase effectively;  be able to use some less common and idiomatic vocabulary and showing some awareness of style and collocation with some inappropriate

About Grammatical Range and Accuracy: 

Band Five:  producing basic sentence forms with reasonable accuracy;  use a limited range of more complex structure with errors or misunderstanding

Band Seven: use a range of complex structure with some fle*bility; frequently produce error-free sentences though with some grammatical mistakes

About Pronunciation: 

Band Five: shows the positive features between Band 4 and Band 6

Band Seven: shows the positive features between Band 6  and Band 8

Answer to Question 1: 

In the teaching p*ess, speed, grammar, pronunciation, logic, vocabulary and how to use them fle*bly should be emphasized on and trained.

Answer to Question 2:

This implies that appropriate studying materials which include grammar, vocabulary, writing and reading ones  would be chosen for students of different levels. 

 Fluency and coherence

5: repetition, self-correction, slow speech; overuse connectives; fluency problems

7: without noticeable effort; some hesitation, repetition or self-correction; some fluency with connectives

Le*cal resource

5: voc with limited fle*bility, para mixed suc

7. less common voc; para effectively

Grammar and accuracy

5. basic form, certain errors

7. complex, error-free

Pronunciation

5. limited features

7. effective use 

The main differences between band 5 and 7:

1. Fluency and coherence

Band 7 candidates speak more fluently with better coherence, less language-related hesitation/repetition, more appropriate connectives.

2. Le*cal resource

Band 7 candidates speak with wider range of vocabulary, especially idiomatic expressions, with better command of paraphrasing.

3. Grammatical range and accuracy

Band 7 candidates uses a variey of complex structures with better fle*bility and less grammatical mistakes.

4. Pronunciation

Band 7 candidates uses a range of pronunciation features more effectively, with less mispronunciation.

The differences between bands 5 and 7:

1. Band 5: uses repetition, self correction and/or slow speech to keep going; over-use some connectives and discourse markers, lack of flexbility;complex communication may cause fluency problems.

Band 7: with coherence; sometimes using some repetition and self-correction; using connectives and discourse markers with some flexbility.

2. le*cal resources: Band 7: uses some less common and idiomatic vocabulary and shows some awareness of style and collocation, with some inappropriate choicesuses paraphrase effectively

Band 5:uses vocabulary with limited fle*bility; attempts to use paraphrase but with mixed success

3. Grammatical range and accuracy:

4. Pronounation