Presentation --All of my sentences sounds the same

 Let the senteces have more variety and clarity:
1.Same subject/same verb

• Lily bought a delicious cake. Lily gave the cake to her mother. (same subject)
• Lily bought a delicious cake and gave it to her mother.
• Lily's sister likes swimming. Lily's sister like dancing ( same subject + verb)
• Lily's sister likes swimming and dancing.

2.How to link the equal important ideas
   " , " (commas):

• Lily has a cat. Lily has an umbralla. Lily had three pens.
• Lily has a cat, an umbralla, and three pens.

  Conjunction:

• common ues: and, but, for, so, etc.
• And - in addition, along with
• But - however, except, on the other hand
• For- because, the reason why
• So - as a result of, therefore
• Etc.

  Varity use of Conjunctions:
      And vs Along with

• Grandpa and I are going hunting after dinner, and we are taking our favorite trap.
• Grandpa and I are going hunting along with our favorite trap.

3.How to link the unequal important ideas
   Common use: when, until, after, as soon as, etc.

1. After:

• The two countries reached an agreement on trade policies. They then were able to complete their peace treaty.
• After the two countries reached an agreement on trade policies, they were able to complete their peace treaty.

4.Phrase formulas:
   Common kind of phrase:noun, verb, absolute, infinitive, etc.

• Noun phrase = Noun + all modifiers
• According to both side of debate, teaching is a valuable profession, and compensation for this important job must be improved ( Noun phrase = Complement)

References:

• www.mce.k12tn.net/dogs/fern/sentences/online_lesson10.htm.Electronic
• leo.stcloudstate.edu/style/sentencev.html
• leo.stcloudstate.edu/grammar/phraseformulas.html