九年級(jí)英語下冊(cè)Unit5重要短語匯總
現(xiàn)在完成時(shí)態(tài)
⑴由have/ has ＋ 過去分詞
⑵表示過去發(fā)生或已經(jīng)完成的某一動(dòng)作對(duì)現(xiàn)在造成的影響或結(jié)果
常與already, just , yet , ever, never 連用
have you finished your work yet？你完成了你的工作了嗎？
yes, i have. i have just finished it. 是的。我剛剛完成了。
i have already finished it . 我已經(jīng)完成了。
have you ever been to china? 你曾經(jīng)去過中國嗎？
no, i have never been there. 沒有，我從來也沒有去過。
⑶①表示過去已經(jīng)開始，持續(xù)到現(xiàn)在的動(dòng)作 或狀態(tài)和表示過去某一時(shí)刻延續(xù)到現(xiàn)在（包括現(xiàn)在在內(nèi)）的一段時(shí)間的狀態(tài)連用如：（for + 時(shí)間段，since + 時(shí)間點(diǎn)，或過去某一動(dòng)作， 以及how long ）
②注： 非延續(xù)性動(dòng)詞在現(xiàn)在完成 時(shí)態(tài)中不能和for, since 引導(dǎo)的表示一段時(shí)間的狀語的肯定句連用。
應(yīng)轉(zhuǎn)為相應(yīng)的延續(xù)性動(dòng)詞 如：
buy---- have die---- be dead join ---- be in
borrow----- keep leave---- be away
i have bought a pen.------ i have had a pen for 2 weeks.
the dog has died.------- the dog has been dead since last week.
⑷①have (has) been to + 地點(diǎn) 去過某地 已經(jīng)回來
②have (has) gone to + 地點(diǎn) 去了某地 沒有回來
③have been in + 地點(diǎn) 一直呆在某地 沒有離開過 如：
she has been to shanghai. 她去過上海。(已經(jīng)回來)
she has gone to shanghai. 她去了上海。(沒有回來)
she has been in shanghai for 2 days.她呆上海兩天了。(沒有離開過上海)
1.情態(tài)動(dòng)詞must, may , might, could, may , can’t表示推測(cè)含義與用法后面都接動(dòng)詞原形，都可以表示對(duì)現(xiàn)在情況的揣測(cè)和推斷但他們
含義有所不同
must 一定 肯定 (100%的可能性)
may, might, could有可能，也許 (20%－80%的可能性)
can’t 不可能，不會(huì) (可能性幾乎為零)
the dictionary must be mine. it has my name on it.
the cd might/could/may belong to tony because
he likes listening to pop music.
the hair band can’t be bob’s. after all, he is boy!
2. whose 誰的 疑問詞 作定語 后面接名詞
如：whose book is this? this is lily’s.
3. belong to 屬于 如：
that english book belongs to me.
4. 當(dāng)play 指彈奏樂器時(shí)，常在樂器前用定冠詞 如：
play the guitar play the piano play the violin
當(dāng)play 指進(jìn)行球類運(yùn)動(dòng)時(shí)，則不用定冠詞 如：
play football play basketball play baseball
5. if引導(dǎo)的條件狀語從句，主句用一般將來時(shí)，
從句用一般現(xiàn)在時(shí)代替將來時(shí) 如：
if you don’t hurry up, you’ll be late.如果你不快點(diǎn)，你將會(huì)遲到
6. if you have any idea== if you know 如果你知道
7. on 關(guān)于（學(xué)術(shù)，科目）
8. try to do sth. 嘗試做某事 如：i try to climb the tree. 我嘗試爬樹。