composed with 和contacting with 引导的从句用这个形式吗为什么ing

不是形式上统一，得根据具体情况分析。和主语是属于主动还是被动关系

由。。。构成，英语中正确的是be composed with,还是 be composed of？

be comprized/comprised by = be composed of = be made up of = consist of = be constitued by..

“临时准备”怎么说？是一个单词来的

impromptu / extemporaneous / makeshift

im·promp·tu (ĭm-prŏmp'tū, -tyū)

adj.

Prompted by the occasion rather than being planned in advance: an impromptu party.

Spoken, performed, done, or composed with little or no preparation; extemporaneous: a few impromptu remarks. See synonyms at extemporaneous.

adv.

With little or no preparation; extemporaneously.

n.

Something, such as a speech, that is made or done extemporaneously.

Music. A short composition, especially for the piano, performed in an offhand or extemporized style.

[French, from Latin in prōmptū, at hand : in, in; see in–2 + prōmptū, ablative of prōmptus, readiness, from past participle of prōmere, to bring forth. See prompt.]

im·promp·tu (ĭm-prŏmp'tū, -tyū)

adj.

Prompted by the occasion rather than being planned in advance: an impromptu party.

Spoken, performed, done, or composed with little or no preparation; extemporaneous: a few impromptu remarks. See synonyms at extemporaneous.

adv.

With little or no preparation; extemporaneously.

n.

Something, such as a speech, that is made or done extemporaneously.

Music. A short composition, especially for the piano, performed in an offhand or extemporized style.

[French, from Latin in prōmptū, at hand : in, in; see in–2 + prōmptū, ablative of prōmptus, readiness, from past participle of prōmere, to bring forth. See prompt.]

im·promp·tu (ĭm-prŏmp'tū, -tyū)

adj.

Prompted by the occasion rather than being planned in advance: an impromptu party.

Spoken, performed, done, or composed with little or no preparation; extemporaneous: a few impromptu remarks. See synonyms at extemporaneous.

adv.

With little or no preparation; extemporaneously.

n.

Something, such as a speech, that is made or done extemporaneously.

Music. A short composition, especially for the piano, performed in an offhand or extemporized style.

[French, from Latin in prōmptū, at hand : in, in; see in–2 + prōmptū, ablative of prōmptus, readiness, from past participle of prōmere, to bring forth. See prompt.]

ex·tem·po·ra·ne·ous (ĭk-stĕm'pə-rā'nē-əs)

adj.

Carried out or performed with little or no preparation; impromptu: an extemporaneous piano recital.

Prepared in advance but delivered without notes or text: an extemporaneous speech.

Skilled at or given to unrehearsed speech or performance: an accomplished extemporaneous speaker.

Provided, made, or adapted as an expedient; makeshift: an extemporaneous policy decision.

参考资料：

improvise

v.

临时准备

improvise

im.pro.vise

v.（动词）

im.pro.vised， im.pro.vis.ing， im.pro.vis.es

v.tr.（及物动词）

To invent, compose, or recite without preparation.

即兴创作：无准备地发明、创作或者背诵

To make or provide from available materials:

临时提供，临时凑成：用可利用的材料做或提供：

improvised a dinner for the unexpected guests; improvise a makeshift tourniquet.

为不速之客准备晚餐；提供备用的止血带

v.intr.（不及物动词）

To invent, compose, recite, or execute something offhand.

即席创作; 即席表演：即兴地发明、创作、背诵或者制成某事物

参考资料：

金山词霸