很多人私信提問：到底什麼時候用不定式、動名詞和分詞？
首先，先允許我對上一篇文章的效果進行反思，原本以為已經講得很明白，很詳細，很具體了，但是，如同炎熱的夏天火辣辣的炙烤出殘酷的現實是：同學們不想學、也記不住條條框框的語法，而更想看到大白話的，放之四海而皆準的，簡單有效的表述。
純乾貨來了！
理解非謂語動詞的語態——主動和被動理解非謂語動詞的時態——過去,現在,將來不定式表示將來、目的和主動狀態現在分詞表狀態、習慣和愛好過去分詞表示被動關係理解非謂語動詞,關鍵是掌握兩個內容
理解非謂語動詞的語態——主動和被動理解非謂語動詞的時態——過去,現在,將來判斷步驟：
第一步：判斷非謂語動詞，在句子裡作什麼成分。該步驟的目的，是為了尋找非謂語動詞的邏輯主語，從而判斷非謂語動詞的語態是主動還是被動.第二步：結合主句的謂語動詞，判斷非謂語動詞發生的時間，是在過去,將來,還是同時發生。第三步：主動 having done | doing | to do第四歩：被動 done | being done | to be done下面的內容是換一個角度幫助理解分非謂語動詞，不過只要理解了上面的內容，基本上可以應付中高考的相關知識點考查。
搞明白什麼是邏輯主語
邏輯主語：是非謂語動詞動作的執行者或承受者；它們在邏輯上存在著主謂關係或動賓關係，但不能直接作非謂語動詞的主語，因此叫邏輯主語。邏輯主語就是不一定是出現在句子裡的那個主語，但卻是能真正發出該句子動作的人
真正的主語是句子的主語，而邏輯主語是除了主句外，另外的一個動作的發出者，有可能是句子的主語，有可能不是。
不定式的邏輯主語
一. 不定式及短語作狀語、定語、表語和主語
不定式動詞和其短語在句子中作狀語、定語、表語和主語，其邏輯主語通常是句子的邏輯主語：
He opened the door to let kids in.He hurried home to fine his mother wasn't home.he boy was lost, never to be found again.To do morning exercises is useful for our health.To sweep the floor is my duty every day.He has much homework to do today.We have a very distinguished guest to attend our party.He is always the first to come and the last to leave.
二. 不定式的複合結構
不定式動詞和其短語在句子中作主語或賓語(有時被指示代詞it代替)的時候常用介詞for和of引導不定式的邏輯主語：
She fetched several bottles for Harry to use.It's so kind of you to help me.For a child to learn everything is impossible. =It's impossible for a child to learn everything.The article is too difficult for me to understand.The order for them to climb the mountain was given.The Internet made it possible for us to contact with relatives miles away.三. 不定式及短語作賓語補足語
不定式動詞和其短語在句子中作賓語補足語，邏輯主語通常是主句的邏輯賓語：
My mother asked me to wash the clothes.I consider him to be the best candidate.The teacher told him to come on time.Edison’s mother taught him to read and write.Theyarebelievedtohavediscussedtheproblem.Thousandswerereportedtobeworkinginconcentrationcamps.Heisthoughttobehidinginthewoods.My mother wouldn’t let me go to the film.I don’t like milk, but mother made me drink it.I would have him wait for me at the gate of the park.I watched her get into the car.I saw the woman enter a bank.We often hear her sing this song.Did you notice her leave the house?四. 不定式及短語作及物動詞賓語
不定式和其短語在句子中作及物動詞的賓語，邏輯主語通常是主句的邏輯主語：
I agreed to support him.He said he wanted to be a professor.過去分詞的邏輯主語
一. 過去分詞及短語作狀語和定語
過去分詞及其短語作定語和狀語，句子或分句的語法主語是分詞的邏輯賓語，而邏輯主語一般省略或用介詞by以介詞賓語的形式被引導：
Moved to tears by her, he stood there silently.Grown in rich soil, these seeds can grow fast.He was all wet caught in a heavy rain.Seen from the top of the hill,the city looks more beautiful to us.The new product finally passed the required test.There are many beautifully decorated houses in this rich area.The man followed by security guards is our chairman.二. 過去分詞及短語作賓語補足語
過去分詞及其短語作賓語補足語，句子或分句的語法主語是分詞的邏輯賓語，而邏輯主語一般省略或用介詞by以介詞賓語的形式被引導：
I heard the song sung by a girl in English.I'll have my hair cut tomorrow.Don't leave those things undone.-ing分詞的邏輯主語
一. -ing分詞作狀語和定語
-ing分詞及其短語作狀語，其邏輯主語是句子或分句的語法主語；-ing分詞及其短語作定語語，其邏輯主語是其所修飾的名詞；
Hearing the news, they all jumped with joy.Falling water can be used to generate electricity.二. -ing分詞及短語作賓語補足語
-ing分詞及其短語作賓語補足語，句子或分句的邏輯主語是句子中的語法賓語。
Can you hear her singing the song in the next room?
三. 名詞化的-ing分詞
名詞化的ing分詞(動名詞)的；邏輯主語可以跟從句子或分句語法主語，這一點不再展開；但同時也可以附加邏輯主語，即在分詞前加代詞賓格或形容詞性物主代詞：
His being frightened makes us aware.Would you mind me opening the window?